Siemens REDUREX User manual

FLENDER gear units
REDUREX
Gear Unit
Assembly and operating instructions
BA 5200 EN 08/2010

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BA 5200 EN 08/2010
REDUREX
Gear Unit
Assembly and operating instructions
Translation of the original assembly and operating instructions
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T
echnical data
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Spare parts,
Service addresses
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Maintenance
and repair
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Faults, causes
and remedy
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Operation
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Startup
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Fitting
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T
echnical
description
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T
ransport and
storage
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Safety instructions
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General notes
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Declarations

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Notes and symbols in these assembly and operating instructions
Note: The term "Assembly and operating instructions" will in the following also be shortened to "instructions"
or "manual".
Legal notes
Warning note concept
This manual comprises notes which must be observed for your personal safety and for preventing material damage.
Notes for your personal safety are marked with a warning triangle or an "Ex" symbol (when applying
Directive 94/9/EC), those only for preventing material damage with a "STOP" sign.
WARNING! Imminent explosion!
The notes indicated by this symbol are given to prevent explosion damage.
Disregarding these notes may result in serious injury or death.
WARNING! Imminent personal injury!
The notes indicated by this symbol are given to prevent personal injury.
Disregarding these notes may result in serious injury or death.
WARNING! Imminent damage to the product!
The notes indicated by this symbol are given to prevent damage to the product.
Disregarding these notes may result in material damage.
NOTE!
The notes indicated by this symbol must be treated as general operating information.
Disregarding these notes may result in undesirable results or conditions.
WARNING! Hot surfaces!
The notes indicated by this symbol are made to prevent risk of burns due to hot surfaces
and must always be observed.
Disregarding these notes may result in light or serious injury.
Where there is more than one hazard, the warning note for whichever hazard is the most serious is always used.
If in a warning note a warning triangle is used to warn of possible personal injury, a warning of material damage may
be added to the same warning note.
Qualified personnel
The product or system to which these instructions relate may be handled only by persons qualified for the work
concerned and in accordance with the instructions relating to the work concerned, particularly the safety and
warning notes contained in those instructions. Qualified personnel must be specially trained and have the
experience necessary to recognise risks associated with these products or systems and to avoid possible hazards.

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Intended use of Siemens products
Observe also the following:
Siemens products must be used only for the applications provided for in the catalogue and the relevant
technical documentation. If products and components of other makes are used, they must be
recommended or approved by Siemens. The faultfree, safe operation of the products calls for proper
transport, proper storage, erection, assembly, installation, startup, operation and maintenance. The
permissible ambient conditions must be adhered to. Notes in the relevant documentations must be
observed.
Trademarks
All designations indicated with the registered industrial property mark ® are registered trademarks of Siemens AG.
Other designations used in these instructions may be trademarks the use of which by third parties for their own
purposes may infringe holders’ rights.
Exclusion of liability
We have checked the content of the instructions for compliance with the hard and software described.
Nevertheless, variances may occur, and so we can offer no warranty for complete agreement. The information
given in these instructions is regularly checked, and any necessary corrections are included in subsequent editions.
Symbols
Earth connection point Air relief point yellow
Oilfilling point yellow Oildraining point white
Oil level red Oil level red
Oil overflow Connection for
vibrationmonitoring device
Lubrication point red Apply grease
Lifting eye Eye bolt
Do not unscrew
Alignment surface, horizontal Alignment surface, vertical
These symbols indicate the oillevel checking procedure using the oil dipstick.
These symbols indicate that the oil dipstick must always be firmly screwed in.

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Contents
1. Technical data 8.....................................................
1.1 General technical data 8...............................................................
1.2 Measuringsurface soundpressure level 9...............................................
1.3 Weights 10...........................................................................
2. General notes 13.....................................................
2.1 Introduction 13........................................................................
2.2 Copyright 13..........................................................................
3. Safety instructions 14.................................................
3.1 Obligations of the user 14...............................................................
3.2 Environmental protection 15.............................................................
3.3 Special dangers and personal protective equipment 15......................................
4. Transport and storage 16.............................................
4.1 Scope of supply 16....................................................................
4.2 Transport 16..........................................................................
4.3 Storing the gear unit 18.................................................................
4.4 Standard coating and preservation 18....................................................
4.4.1 Interior preservation with preservative agent 19............................................
4.4.2 Exterior preservation 19................................................................
5. Technical description 20..............................................
5.1 General description 20.................................................................
5.2 Housing 20...........................................................................
5.3 Toothed components 22................................................................
5.4 Lubrication 22.........................................................................
5.4.1 Splash lubrication 22...................................................................
5.4.2 Forced lubrication 22...................................................................
5.5 Shaft bearings 22......................................................................
5.6 Shaft seals 22.........................................................................
5.6.1 Radial shaftsealing rings 22............................................................
5.6.2 Labyrinth seals 23.....................................................................
5.6.3 Taconite seals 23......................................................................
5.7 Cooling 24............................................................................
5.7.1 Fan 24...............................................................................
5.7.2 Cooling coil 24........................................................................
5.7.3 Water oilcooler 25.....................................................................
5.7.3.1 Pump 25.............................................................................
5.7.3.2 Filter 25..............................................................................
5.7.4 External oilsupply system 25............................................................
5.8 Couplings, clutches 25.................................................................
5.9 Backstop 26..........................................................................
5.10 Heating element 26....................................................................
5.11 Oiltemperature monitoring 27...........................................................
5.12 Indication of oil level 27.................................................................
5.13 Oillevel monitoring system 27...........................................................
5.14 Speed transmitter 27...................................................................

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6. Fitting 28.............................................................
6.1 General information on fitting 28.........................................................
6.2 Unpacking 29.........................................................................
6.3 Installation of gear unit on housing base 29................................................
6.3.1 Foundation 29.........................................................................
6.3.2 Description of installation work 29........................................................
6.3.2.1 Alignment 30..........................................................................
6.3.2.2 Mounting on a foundation frame 31.......................................................
6.3.2.3 Mounting on a concrete foundation by means of stone bolts or foundation blocks 31.............
6.3.2.4 Mounting on a concrete foundation by means of anchor bolts 32..............................
6.4 Assembly of a shaftmounting gear unit with hollow shaft and parallel keyway 34................
6.4.1 Fitting 34.............................................................................
6.4.1.1 Fitting 35.............................................................................
6.4.1.2 Axial fastening 35......................................................................
6.4.2 Demounting 35........................................................................
6.5 Shaftmounting gear unit with hollow shaft and shrink disk 36................................
6.5.1 Fitting 36.............................................................................
6.5.1.1 Fitting with redbronze bush 37..........................................................
6.5.1.2 Axial fastening 37......................................................................
6.6 Shrink disk 38.........................................................................
6.6.1 Fitting the shrink disk 38................................................................
6.6.2 Demounting the shrink disk 40...........................................................
6.6.3 Cleaning and greasing the shrink disk 40..................................................
6.6.4 Remounting the shrink disk 41..........................................................
6.6.5 Inspection of the shrink disk 41..........................................................
6.7 Couplings, clutches 41.................................................................
6.8 Gear unit with torque arm 43.............................................................
6.9 Gear unit with gearunit swing 43.........................................................
6.10 Gear units with cooling coil 43...........................................................
6.11 Gear units with addon air oilcooler 43....................................................
6.12 Gear units with add‐on water oilcooler 43.................................................
6.13 Gear unit with oilsupply system 44.......................................................
6.14 Gear unit with oiltemperature monitoring system 44........................................
6.15 Gear unit with oillevel monitoring 44......................................................
6.16 Gear unit with heating 44................................................................
6.17 Gear unit with speed transmitter 44.......................................................
6.18 General notes on addon components 44.................................................
6.19 Final work 44..........................................................................
6.20 Screwconnection classes, tightening torques and initial tensioning forces 45...................
6.20.1 Screwconnection classes 45............................................................
6.20.2 Tightening torques and initial tensioning forces 45..........................................

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7. Startup 47...........................................................
7.1 Procedure before startup 47............................................................
7.1.1 Removal of preservative agent 47........................................................
7.1.2 Filling with lubricant 48.................................................................
7.2 Startup 48...........................................................................
7.2.1 Oil level 49............................................................................
7.2.2 Gear unit with cooling coil or water oilcooler 49............................................
7.2.3 Gear unit with cooling coil or external oilsupply system 49...................................
7.2.3.1 Prelubrication phase of the oilsupply system 49...........................................
7.2.4 Gear unit with backstop 50..............................................................
7.2.5 Gear unit with temperature measurement 50...............................................
7.2.6 Gear unit with oillevel monitoring 50......................................................
7.2.7 Heating 50............................................................................
7.2.8 Checking procedure 51.................................................................
7.3 Removal from service 51...............................................................
7.3.1 Interior preservation during longer disuse 51...............................................
7.3.1.1 Interior preservation with gear oil 51......................................................
7.3.1.2 Interior preservation with preservative agent 51............................................
7.3.1.3 Interiorpreservation procedure 51.......................................................
7.3.2 Exterior preservation 52................................................................
7.3.2.1 Exteriorpreservation procedure 52.......................................................
8. Operation 53.........................................................
8.1 General 53............................................................................
8.2 Oil level 53............................................................................
8.3 Irregularities 53........................................................................
9. Faults, causes and remedy 54.........................................
9.1 General information on faults and malfunctions 54..........................................
9.2 Possible faults 54......................................................................
10. Maintenance and repair 57............................................
10.1 General notes on maintenance 57........................................................
10.1.1 General oilservice lives 58..............................................................
10.2 Description of maintenance and repair work 58.............................................
10.2.1 Examine water content of oil / conducting oil analyses 58....................................
10.2.2 Change oil 59.........................................................................
10.2.3 Clean the breather screw 59.............................................................
10.2.4 Clean the gear unit 60..................................................................
10.2.5 Clean fan and gear unit 60..............................................................
10.2.6 Refill Taconite seals with grease 60......................................................
10.2.7 Check cooling coil 60...................................................................
10.2.8 Check water oil-cooler 61...............................................................
10.2.9 Check hose lines 61....................................................................
10.2.10 Top up oil 61..........................................................................
10.2.11 Check tightness of fastening bolts 61.....................................................
10.3 Final work 62..........................................................................
10.4 General inspection of the gear unit 62.....................................................
10.5 Lubricants 62.........................................................................
11. Spare parts, customerservice addresses 63...........................
11.1 Stocking spare parts 63.................................................................
11.2 Spare parts and customerservice addresses 63...........................................
12. Declarations 64.......................................................
12.1 Declaration of incorporation 64..........................................................

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1. Technical data
1.1 General technical data
The most important technical data are shown on the rating plate. These data and the contractual
agreements between Siemens and the customer for the gear unit determine the limits of its correct use.
①
②
③④
⑤⑥
⑦⑧
⑨
⑩
⑪
⑫
⑬
Fig. 1: Rating plate gear unit
①Company logo ⑧Speed n2
②Order number, item, sequence number /
year built ⑨Oil data
③Total weight in kg (oil type, oil viscosity, oil quantity)
④Special information ⑩Instructions number(s)
⑤Types, sizes *) ⑪Special information
⑥Power rating P2in kW or torque T2in Nm ⑫Manufacturer and place of manufacture
⑦Speed n1⑬Country of origin
*) Example 1
SEN
Size 80 ... 800.................
Type of output shaft N= Solid shaft, gear unit with base....
A= Shaftmounting gear unit with base
O= Shaftmounting gear unit without base
Number of stages E = one helical gear stage.....
Z= two helical gear stages
D= three helical gear stages
V= four helical gear stages
F= five helical gear stages
S= six helical gear stages
Gearunit type S= Helical gear unit.........
K= Bevelhelical gear unit
160160

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*) Example 2
KFOV
Size 320 ... 630......................
Design drive shaft H=Horizontal drive shaft..........
V=Vertical drive shaft
Type of output shaft O=Shaftmounting gear unit.........
without base
Number of stages V=four helical gear stages...........
F=
five helical gear stages
Gearunit type K=Bevelhelical gear unit..............
320
*) Example 3
SZNS
Size 140 ... 710......................
Design drive shaft S=Vertical gear unit..........
Type of output shaft N=Solid shaft, gear unit with base.........
L=
Solid shaft, gear unit with bell housing
A=Shaftmounting gear unit with base
O=Shaftmounting gear unit without base
D=Shaftmounting gear unit
with torque arm
Number of stages E=one helical gear stage...........
Z=two helical gear stages
D=three helical gear stages
V=four helical gear stages
Gearunit type S=Helical gear unit..............
K=Bevelhelical gear unit
140
*) Example 4
S O N D
Size = refer to the drawings......................
in the gearunit documentation
Gearunit type =Seriestype special gearunit..............
on the basis of REDUREX gear units
with slight modifications to the
catalogue design
refer to the drawings
in the gearunit documentation
475
Data on weights and measuringsurface soundpressure levels of the various gear types are given in
items 1.2 and 1.3.
For further technical data, please refer to the drawings in the gearunit documentation and the
orderspecific data sheet.
1.2 Measuringsurface soundpressure level
The gear unit complies with a soundpower level which places it in the gearunit type class defined
in VDI 2159 which is applied to produce the 80 % characteristic curve of the emission characteristic map.
Adherence to limit values can, under specified Siemens test conditions, be assumed with statistical
certainty.

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1.3 Weights
Table 1: Weights (approximate values)
Type Approx. weight (kg) for size
80 100 112 125 140 160 180 200 225 250
SEN 14 26 ‐ 52 ‐ 105 ‐ 210 ‐ 400
SZN - - 53 72 100 135 185 260 350 480
SZO - - 46 63 87 120 160 225 310 420
SZA - - 53 72 100 135 185 260 350 480
SDN - - - - - 150 205 285 390 540
SDO - - - - - 130 175 245 330 460
SDA - - - - - 150 205 285 390 540
SVN - - - - - - 205 290 400 550
SVO - - - - - - 175 245 330 460
SVA - - - - - - 205 290 400 550
SFO - - - - - - - - - -
SSO - - - - - - - - - -
KLN - - - - - - - 310 430 600
KLA - - - - - - - 310 430 600
KSN - - - - - - - - - -
KEN 28 49 - 87 - 160 - 300 - 540
KEO - 42 - 77 - 140 - 260 - 480
KEA - 49 - 87 - 160 - 300 - 540
KZN - - 62 85 115 160 220 310 420 570
KZO - - 51 70 96 135 190 260 360 490
KZA - - 62 85 115 160 220 310 420 570
KDN - - - - - 160 225 320 430 580
KDA - - - - - 160 225 320 430 580
All weights are for units without oil filling and addon parts. For the exact weights, refer to the
drawings in the gearunit documentation.

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Table 2: Weights (approximate values)
Type Approx. weight (kg) for size
280 320 360 400 450 500 560 630 710 800
SEN 580 800 1050 1450 2000 2700 3650 5600 6300 9200
SZN 680 950 1250 1750 2450 3400 4600 6400 8800 12500
SZO 600 830 1100 1550 2150 3000 4000 5600 7700 -
SZA 680 950 1250 1750 2450 3400 4600 6400 8800 12500
SDN 750 1050 1400 1950 2650 3800 5100 7200 10800 14000
SDO 640 890 1200 1700 2300 3200 4400 6200 9000 11500
SDA 750 1050 1400 1950 2650 3800 5100 7200 10800 14000
SVN 760 1100 1450 2000 2700 3900 5200 7300 11000 14000
SVO 640 890 1200 1650 2300 3300 4400 6200 9200 11500
SVA 760 1100 1450 2000 2700 3900 5200 7300 11000 14000
SFO - 1150 1500 2000 2700 3800 5100 7100 - -
SSO - 1180 1550 2050 2750 3900 5200 7200 - -
KLN 840 1180 1680 2300 3250 - - - - -
KLA 840 1180 1680 2300 3250 - - - - -
KSN - - - - - - - - - -
KEN 780 1050 1450 2050 2800 3800 - - - -
KEO 670 910 1250 1750 2400 3200 - - - -
KEA 780 1050 1450 2050 2800 3800 - - - -
KZN 800 1100 1450 2100 2850 4100 5500 7600 10500 14500
KZO 680 920 1200 1700 2350 3300 4400 6000 8100 11500
KZA 800 1100 1450 2100 2850 4100 5500 7600 10500 14500
KDN 820 1150 1500 2150 2900 4200 5600 7700 10500 14500
KDA 820 1150 1500 2150 2900 4200 5600 7700 10500 14500
KVOV - 1150 1500 2000 2700 3800 5100 7100 - -
KVOH - 1150 1500 2000 2700 3800 5100 7100 - -
KFOV - 1180 1550 2050 2750 3900 5200 7200 - -
All weights are for units without oil filling and addon parts. For the exact weights, refer to the
drawings in the gearunit documentation.

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Table 3: Weights (approximate values) vertical gear unit
Type Approx. weight (kg) for size
140 160 180 200 225 250 280 320 360 400 450 500 560 630 710
SZNS 145 210 230 325 455 620 870 1215 1620 2300 3065 4330 5825 8170 11270
SZLS 135 195 212 300 420 575 810 1135 1510 2120 2880 4110 5430 7575 10575
SZAS 145 210 230 325 455 620 870 1215 1620 2300 3065 4330 5825 8170 11270
SZOS 135 195 212 300 420 575 810 1135 1510 2120 2880 4110 5430 7575 10575
SZDS 135 195 212 300 420 575 810 1135 1510 2120 2880 4110 5430 7575 10575
SDNS - 215 235 335 465 635 885 1235 1640 2325 3090 4360 5855 8205 11305
SDLS - 200 217 310 430 590 825 1155 1530 2145 2905 4140 5460 7610 10610
SDAS - 215 235 335 465 635 885 1235 1640 2325 3090 4360 5855 8205 11305
SDOS - 200 217 310 430 590 825 1155 1530 2145 2905 4140 5460 7610 10610
SDDS -200 217 310 430 590 825 1155 1530 2145 2905 4140 5460 7610 10610
SVNS - - 235 335 465 635 885 1235 1640 2325 3090 4360 5855 8205 11305
SVLS -‐ 217 310 430 590 825 1155 1530 2145 2905 4140 5460 7610 10610
SVAS - - 235 335 465 635 885 1235 1640 2325 3090 4360 5855 8205 11305
SVOS -‐ 217 310 430 590 825 1155 1530 2145 2905 4140 5460 7610 10610
SVDS -‐ 217 310 430 590 825 1155 1530 2145 2905 4140 5460 7610 10610
KENS - - - 408 ‐ 742 944 1265 1760 2470 3360 4545 ‐ - ‐
KELS - - - 382 ‐ 692 875 1175 1630 2395 3125 4235 ‐ - ‐
KEAS - - - 408 ‐ 742 944 1265 1760 2470 3360 4545 ‐ - ‐
KEOS - - - 382 ‐ 692 875 1175 1630 2395 3125 4235 ‐ - ‐
KEDS - - - 382 ‐ 692 875 1175 1630 2395 3125 4235 ‐ - ‐
KZNS - - - 400 545 700 915 1250 1670 2400 3170 4520 6200 8500 11600
KZLS - - - 375 510 655 855 1170 1560 2220 2985 4300 5805 7905 10905
KZAS - - - 400 545 700 915 1250 1670 2400 3170 4520 6200 8500 11600
KZOS - - - 375 510 655 855 1170 1560 2220 2985 4300 5805 7905 10905
KZDS - - - 375 510 655 855 1170 1560 2220 2985 4300 5805 7905 10905
KDNS - - - 410 555 710 935 1300 1720 2450 3220 4620 6300 8600 11600
KDLS - - - 385 520 665 875 1220 1610 2270 3035 4400 5905 8005 10905
KDAS - - - 410 555 710 935 1300 1720 2450 3220 4620 6300 8600 11600
KDOS - - - 385 520 665 875 1220 1610 2270 3035 4400 5905 8005 10905
KDDS - - - 385 520 665 875 1220 1610 2270 3035 4400 5905 8005 10905
All weights are for units without oil filling and addon parts. For the exact weights, refer to the
drawings in the gearunit documentation.

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2. General notes
2.1 Introduction
These instructions are an integral part of the gear unit supplied and must be kept in its vicinity for reference
at all times.
All persons carrying out work on the gear unit must have read and understood these
instructions and must adhere to them. Siemens accepts no responsibility for damage
or disruption caused by disregard of these instructions.
The "FLENDER gear unit" dealt with in these instructions has been developed for driving machines in
general engineering applications. Possible areas of use for gear units of this type are (e.g.) sewage
treatment, excavators, chemical industry, iron and steel industry, conveyor systems, crane systems,
foodstuffs industry, paper machinery, cableways, cement industry, etc.
The gear unit is designed only for the application specified in section 1, "Technical data". Other operating
conditions must be contractually agreed.
The gear unit has been manufactured in accordance with the state of the art and is delivered in a condition
for safe and reliable use.
The gear unit must be used and operated strictly in accordance with the conditions laid down in the contract
governing performance and supply agreed by Siemens and the customer.
The gear unit described in these instructions reflects the state of technical development at the time these
instructions went to print.
In the interest of technical progress we reserve the right to make changes to the individual assemblies and
accessories which we regard as necessary to preserve their essential characteristics and improve their
efficiency and safety.
2.2 Copyright
The copyright to these instructions is held by Siemens AG.
These instructions must not be wholly or partly reproduced for competitive purposes, used in any
unauthorised way or made available to third parties without our agreement.
Technical enquiries should be addressed to the following works or to one of our customer services:
Siemens AG
Südstraße 111
44625 Herne
Tel.: [phone] / 940-0
Fax: [phone] / 940-200
Service‐Hotline: 0172 / 2810100

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3. Safety instructions
Entry to the gear unit and its added components is not permitted during operation!
Entry for maintenance and repair work is only permitted when the gear unit is at
a standstill!
Caution! Risk of falling!
Any changes on the part of the user are not permitted. This applies equally to safety
features designed to prevent accidental contact.
3.1 Obligations of the user
• The operator must ensure that everyone carrying out work on the gear unit has read and understood
these instructions and is adhering to them in every point in order to:
─ avoid injury or damage,
─ ensure the safety and reliability of the unit,
─ avoid disruptions and environmental damage through incorrect use.
• During transport, assembly, installation, dismantling, operation and maintenance of the unit, the
relevant safety and environmental regulations must be complied with at all times.
• The gear unit must be operated, maintained and/or repaired only by authorised, properly trained and
qualified personnel.
• The outside of the gear unit must not be cleaned with highpressure cleaning equipment.
• All work must be carried out with great care and with due regard to safety.
All work on the gear unit must be carried out only when it is not in operation.
The drive unit must be secured against being switched on accidentally (e.g. by locking
the key switch or removing the fuses from the power supply). A notice should be
attached to the start switch stating clearly that work is in progress.
• No electrical welding work must be done at all on the drive.
The drives must not be used as an earthing point for welding operations. Toothed parts and bearings
may be irreparably damaged by welding.
• A potential equalisation in accordance with the applying regulations and directives must be carried out!
If no threaded holes for earth connection are available on the gear unit, other appropriate measures
must be taken. This work must always be done by specialist electricians.
If any inexplicable changes are noticed during operation of the gear unit, such as an
important increase in temperature or unusual noises, the drive assembly must be
switched off immediately.
Rotating and/or movable drive components must be fitted with suitable safeguards to
prevent contact.
When the gear unit is incorporated in plant or machinery, the manufacturer of such
plant or machinery must ensure that the contents of these instructions are
incorporated in his own instructions.

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• When removing the safety equipment the fixation means should be stored for later use. Removed
safety equipment must be reinstalled prior to starting up.
• Notices attached to the gear unit, such as rating plate, direction arrows, must always be observed. They
must be kept free from dirt and paint at all times. Missing plates must be replaced.
• Screws which have been damaged during assembly or disassembly work must be replaced with new
ones of the same strength class and type.
• Spare parts should always be obtained from Siemens (see also section 11).
3.2 Environmental protection
• Compliance with local environmental protection requirements during operation and in particular during
maintenance and repair work on the gear unit is the responsibility of the operator.
• Dispose of any packaging material in accordance with regulations or separate it for recycling.
• When changing oil, the used oil must be collected in suitable containers. Any pools of oil which may
have collected should be removed at once with an oilbinding agent.
• Preservative agents should be stored separately from used oil.
• Used oil, preservative agents, oilbinding agents and oilsoaked cloths must be disposed of in
accordance with environmental legislation.
• Disposal of the gear unit after its useful life:
─ Drain all the operating oil, preservative agent and/or cooling agent from the gear unit and dispose
of in accordance with regulations.
─ Depending on national regulations, gearunit components and/or addon parts may have to be
disposed of or sent for recycling separately.
3.3 Special dangers and personal protective equipment
• Depending on operating conditions, the surface of the gear unit may heat up or cool down to extreme
temperatures.
In the case of hot surfaces (> 55 °C) there is a risk of burns!
In the case of cold surfaces (< 0 °C) there is a risk of frost injury (pain, numbness,
frostbite)!
During oil changes there is a risk of scalding from escaping oil!
Small foreign matter such as sand, dust, etc., may often easily find their way past the
guards of the rotating parts and be thrown around by them.
Risk of eye injury!
In addition to any generally prescribed personal safety equipment (such as safety shoes,
safety clothing, helmet) handling the gear unit requires wearing suitable safety gloves and
suitable safety glasses!
The gear unit does not comply with the requirements in Directive 94/9/EC and must
therefore, in the area of applicability of this directive, not be used in potentially
explosive areas.
Caution, serious danger!
Should the gear unit be used outside the area of applicability of Directive 94/9/EC
within potentially explosive areas, the nationally applying protective prescriptions
with regard to explosion protection must always be observed.

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4. Transport and storage
Observe the instructions in section 3, "Safety instructions"!
4.1 Scope of supply
The products supplied are listed in the despatch papers. Check immediately on receipt to ensure that all
the products listed have actually been delivered. Parts damaged and/or missing parts must be reported
to Siemensin writing immediately.
If there is any visible damage, the gear unit must not be put into operation.
4.2 Transport
When transporting Siemens products, use only lifting and handling equipment of
sufficient loadbearing capacity!
Observe the notes regarding load distribution on the packing. While being transported
on vehicles, loads must be properly secured as required by the regulations.
The gear unit is delivered in the fully assembled condition. Additional items are delivered separately
packaged, if applicable.
Different forms of packaging may be used, depending on the size of the unit and method of transport.
Unless otherwise agreed, the packaging complies with the HPE Packaging Guidelines.
The symbols marked on the packing must be observed at all times. These have the following meanings:
Top Fragile Keep dry Keep cool Centre of
gravity
Use no hand
hook
Attach
here
Fig. 2: Transport symbols
Transport of the gear unit must be carried out so as to avoid personal damage and
damage to the gear unit.
If, for example, the free shaft ends are knocked, this may damage the gear unit.
The gear unit must be transported using suitable equipment only. During transport the gear unit
should be left without oil filling and on the transport packing.
When transporting the gear unit, use only the transport eyes and/or transport lugs
provided to attach slinging and lifting equipment to the gear unit.
The pipework must not be damaged.
Do not use the front threads at the shaft ends to attach slinging and lifting gear for
transport.
Slinging and lifting gear must be adequate for the weight of the gear unit.

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Type S.N ≤ 280 Type K.N ≤ 280
Type S.N ≥ 280 Type K.N ≥ 280
Fig. 3: Attachment points
Type SZNS Type KZNS
Fig. 4: Attachment points
A detailed view of the gear unit can be obtained from the drawings in the gearunit documentation.
On gear units with an addon drive motor the centre of gravity may shift. In this case the slinging and lifting
equipment should be attached to the motor as well.

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4.3 Storing the gear unit
The gear unit must be stored in a sheltered place in the position of the original packaging or in the position
of use, placed on a vibrationfree, dry base, and covered over.
When temporarily storing the gear unit and any single components supplied with it,
the preservative agent should be left on them. It must not be damaged, otherwise there
is a risk of corrosion.
Do not stack gear units on top of one another.
If the gear unit is being stored out of doors, it must be particularly carefully covered,
and care must be taken that neither moisture nor foreign material can collect on the
unit. Waterlogging should be avoided.
Unless otherwise agreed by contract, the gear units must not be exposed to harmful
environmental factors such as corrosive chemical products, a high air pollution, high air
humidity and/or ambient temperatures outside the range 0 to + 40 °C.
Provision for special environmental conditions during transport (e.g. transport by ship) and
storage (climate, termites, etc.) must be contractually agreed.
4.4 Standard coating and preservation
The gear unit is provided with an interior preservative agent; the free shaft ends are painted for protection.
The characteristics of the external coat depend on the ambient conditions stipulated in the order relating
to method of transport and area of application.
The gear unit is normally delivered completely ready, with a priming and a finish coat.
Where gear units are delivered with a priming coat only, it is necessary to apply a finish
coat in accordance with directives applying to the specific application.
The priming coat alone is not suitable to provide a sufficient longterm corrosion
protection.
Ensure that the coat is not damaged!
Any damage may cause failure of the external protective coating and corrosion.
Unless otherwise contractually agreed, the interior preservation is guaranteed for 6 months,
and the exterior preservation for 24 months, provided that storage is in dry, frostfree sheds.
The guarantee period starts on the date of delivery or that of the notice that the item is ready
for shipment.
For longer periods of storage (> 6 months) we advise regular checking and, if necessary, renewal of the
interior and exterior preservation (see items 7.3.1 and 7.3.2).
When chicking this, the output shaft must be rotated at least one turn to change the position of the rolling
element in the bearings. The input shaft must not be in the same position as before rotation.
This checking must be repeated and documented every 6 months until startup.

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4.4.1 Interior preservation with preservative agent
Table 4: Durability period and measures for interior preservation when using mineral oil or PAObased
synthetic oil
Duration of protection Preservative agent Special measures
up to 6months
Castrol Alpha SP 220 S
none
up to 24 months
- Close all holes in the gear unit
 Replace air filter with screw plug.
(prior to startup replace screw
plug with air filter)
For storage periods longer than 24 months, renew the preservative agent.
For storage periods longer than 36 months, Siemens should be consulted before.
Table 5: Durability period and measures for interior preservation when using PGbased synthetic oil
Duration of protection Preservative agent Special measures
up to 6months
Special anticorrosion oil
TRIBOL 1390 1)
none
up to 36 months
- Close all holes in the gear unit
 Replace air filter with screw plug.
(prior to startup replace screw
plug with air filter)
For storage periods longer than 36 months, Siemens should be consulted before.
1) Resistant to tropical conditions and sea water; max. ambient temperature 50 °C
4.4.2 Exterior preservation
Table 6: Durability period for exterior preservation of shaft ends and other bright machined surfaces
Duration
of protection
Preservative
agent Layer
thickness Remarks
in case of indoor
storage
up to 36 months 1)
Tectyl 846 K19 approx. 50 μm
Longterm waxbased preservative
agent:
- resistant to seawater
 resistant to tropical conditions
 (soluble with CH compounds)
in case of outdoor
storage
up to 12 months 2)
1) The gear unit must be stored in the position of use in a sheltered place; it must be placed on
a vibrationfree, dry wooden base and covered over.
2) If the gear unit is being stored out of doors, it must be particularly carefully covered, and care must be
taken that neither moisture nor foreign material can collect on the unit. Waterlogging should be avoided.
The procedure for interior and exterior preservation treatment is described in section 7
(see items 7.3.1.3 and 7.3.2.1).

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5. Technical description
Observe the instructions in section 3, "Safety instructions"!
5.1 General description
The gear unit described is a gear unit developed for driving machines in general engineering applications.
The gear unit is supplied as a single, two, three, four, five or sixstage helical or bevelhelical gear unit.
It is designed for installation in the horizontal mounting position. If necessary, it can also be designed for
installation in a different position.
The gear unit can be operated in both directions of rotation. However, it is possible that
a certain direction of rotation has been specified in the order which is realised by
addingon a backstop or overrunning clutch.
The gear unit is characterised by a low noise level. This is achieved by ground bevel and cylindrical gears
with a high contact ratio and special sounddamping housings.
The good temperature characteristics of the gear unit are achieved by its high degree of efficiency, large
housing surface and performancerelated cooling system.
If required, standardrange gear units can be fitted with a motor bell housing, motor swing base, torque
reaction arm, oil cooler and backstop.
5.2 Housing
The housing is made of cast iron in two parts; if necessary, it may also be made of steel.
The housing is rigid in design and due to its form has excellent noise and temperature characteristics.
The gearunit housing comes with the following equipment:
• Lifting eyes or transport lugs (adequately dimensioned for transport)
• Inspection and/or assembly cover (for oil filling and/or inspection)
• Oil dipstick (to check the oil level)
• Oildrain plug (for oil drain)
• Breather screw (for venting)
Colour codes for ventilating, oil inlet, oil level and oil drainage:
Airrelief point: yellow Oildraining point: white
Oilfilling point: yellow Lubrication point: red
Oil level: red Oil level: red