SEW-Eurodrive PSB311 User manual

Low Backlash Planetary Gear Units Edition
03/2001
Operating Instructions
1051 4015 / EN

SEW-EURODRIVE

Operating Instructions - Low Backlash Planetary Gear Units
3
Contents
1 Important Notes............................................................................................ 4
2 Safety Notes ................................................................................................. 5
3 Setup and Installation.................................................................................. 6
3.1 Before you begin.................................................................................. 6
3.2 Required tools / resources................................................................... 6
3.3 Preliminary work .................................................................................. 6
3.4 Installing the gear unit.......................................................................... 6
3.5 Installation in the machine ................................................................... 7
3.6 Mounting output elements.................................................................... 8
3.7 Motor mounting with EK coupling ...................................................... 10
4 Startup......................................................................................................... 12
4.1 Starting operation of low backlash planetary gear units .................... 12
5 Operation and Servicing............................................................................ 13
5.1 Troubleshooting................................................................................. 13
5.2 Inspection and maintenance.............................................................. 13
6 Mounting Positions.................................................................................... 14
6.1 General information about mounting positions .................................. 14
6.2 PSF211 – PSF902............................................................................. 15
6.3 PSB311 – PSB612............................................................................. 16
6.4 PSE211 – PSE612............................................................................. 17
Addresses................................................................................................... 18
00
I
M1…M6M1 … M6

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4
Operating Instructions - Low Backlash Planetary Gear Units
1 Important Notes
Safety and
warning
instructions
Always follow the safety and warning instructions contained in this publication!
A requirement of fault-free operation and fulfillment of any rights to claim under
guarantee is that the information in the operating instructions is adhered to.
Consequently, read the operating instructions before you start working with the drive!
The operating instructions contain important information about servicing; as a result,
they should be kept in the vicinity of the unit.
Waste disposal Please follow the current instructions:
• Housing parts, gears, shafts and anti-friction bearings of the gear units must be
disposed of as steel scrap. The same applies to gray cast iron castings unless there
are separate collection arrangements.
• Collect waste oil and dispose of it correctly.
Hazard
Possible consequences: Severe or fatal injuries.
Hazardous situation
Possible consequences: Slight or minor injuries.
Harmful situation
Possible consequences: Damage to the drive and the environment.
Tips and useful information.

Operating Instructions - Low Backlash Planetary Gear Units
5
2
2 Safety Notes
Preliminary
remarks
The following safety notes are principally concerned with the use of gear units.
If using geared motors, please also refer to the safety notes for motors in the
corresponding operating instructions.
General
information
During and after operation, geared motors and gear units have live and moving parts
and their surfaces may be hot.
All work related to transport, putting into storage, setting up/mounting,
connection, startup, maintenance and repair only by trained personnel observing
•the corresponding detailed operating instructions booklet(s) and wiring
diagrams,
•the warning and safety signs on the gear unit/geared motor,
•the specific regulations and requirements for the system and
•national/regional regulations governing safety and the prevention of
accidents.
Severe injuries and damage to property may result from
• incorrect use,
• incorrect installation or operation,
• removal of required protective covers or the housing when this is not permitted.
Designated use These geared motors/gear units are intended for industrial systems. They correspond
to the applicable standards and regulations. The technical data and the information
about permitted conditions are to be found on the nameplate and in the documentation.
It is essential for all specified information to be observed!
Transport / putting
into storage
Inspect the delivery for any damage in transit as soon as you receive the delivery. Inform
the transport company immediately. It may be necessary to preclude startup.
Use suitable, sufficiently rated handling equipment if necessary. Remove any transport
fixtures prior to startup.
Store the gear unit in a dry, dust-free room if it is not going to be installed straight
away.

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Operating Instructions - Low Backlash Planetary Gear Units
Before you begin
3 Setup and Installation
3.1 Before you begin
The drive may only be installed if
• the entries on the nameplate of the drive match the voltage supply system,
• the drive is undamaged (no damage caused by transport or storage) and
• it is certain that the following requirements have been fulfilled:
–with standard gear units: ambient temperature between -10 °C and +60 °C, no oil,
acid, gas, vapors, radiation, etc.
–with special versions: drive configured in accordance with the ambient conditions.
3.2 Required tools / resources
• Set of spanners
• Torque wrench (+ set of screwdrivers with a long hexagonal driver)
• Mounting device
• Shims and distance rings if necessary
• Fixing devices for input and output elements
• Lubricant (e.g. NOCO®fluid)
3.3 Preliminary work
The output shafts and flange surfaces of the motor to be mounted must be thoroughly
cleaned of anti-corrosion agents, contamination or such like (use a commercially
available solvent). Do not let the solvent come into contact with the sealing lips of the oil
seals – danger of damage to the material!
3.4 Installing the gear unit
The gear unit or geared motor may only be mounted or installed in the specified
mounting position on a level1, vibration damping and torsionally rigid support structure.
Use plastic inserts (2 – 3 mmthick) if there is a risk of electrochemical corrosion between
the gear unit and the driven machine (connection between different metals such as cast
iron and high-grade steel)! Also fit the bolts with plastic washers. Ground the housing
additionally – use the grounding bolts on the motor.
1. Maximum permitted flatness error for flange mounting (approximate values with reference to DIN ISO
1101): with flange 120 – 600 mm max. error 0.2 – 0.5 mm

Operating Instructions - Low Backlash Planetary Gear Units
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3
Installation in the machine
3.5 Installation in the machine
In contrast to the PSF series, PSE gear units are installed on the existing machine using
tapped holes in the gearcase.
PSE gear unit:
Fit screws from
machine side
PSF gear unit:
Fit screws from
gear unit side
50219AXX
Fig. 1: Installation of PSE gear unit in the machine
PSE
50220AXX
Fig. 2: Installation of PSF gear unit in the machine
PSF

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Operating Instructions - Low Backlash Planetary Gear Units
Mounting output elements
3.6 Mounting output elements
Fig. 3 shows a sample mounting device for installing couplings (3) or hubs onto motor
or gear unit shaft extensions (4). It may be possible to dispense with the thrust bearing
(2) on the mounting device.
When input and output elements are mounted on PSF series units, the shaft nut on
the input and output shaft must not be used as a stop for transmission elements (belt
pulley, pinion gear, etc.).
When input and output elements are mounted on PSE series units, the shaft shoulder
(Fig. 3, no. 1) is allowed to be used as a defined stop point.
Fig. 4 shows the correct mounting arrangement of a gear or sprocket in order to avoid
impermissibly high overhung loads.
• Only use a mounting device (see Fig. 3) for installing input and output elements. Use
the center bore and the thread on the shaft end for positioning purposes.
•Never drive belt pulleys, couplings, pinions, etc. onto the shaft end by hitting
them with a hammer (damage to bearings, housing and the shaft!).
•In the case of belt pulleys, make sure the belt is tensioned correctly (in
accordance with the manufacturer’s instructions).
• Transmission elements should be balanced after fitting and must not give rise to any
impermissible radial or axial forces (see Fig. 4 / for permitted values, see the "Low
Backlash Planetary Gear Units" catalog).
50278AXX
Fig. 3: Sample mounting device
50279AXX
Fig. 4: Correct mounting arrangement of a gear or sprocket
12
3
4
X
1
F
X1
XX
X
11
1
X
1
F
X1
FF
F
X1X1
X1

Operating Instructions - Low Backlash Planetary Gear Units
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3
Mounting output elements
Mounting
couplings
Couplings must be mounted and balanced according to the information provided by the
coupling manufacturer:
A Maximum and minimum clearance
B Axial misalignment
C Angular misalignment
Input and output elements such as belt pulleys, couplings, etc. must have
protection against contact!
Mounting is easier if you first apply lubricant to the output element or heat it up briefly
(to 80 – 100 °C).
04332AXX
Fig. 5: Maximum and minimum clearance (A), axial misalignment (B), angular misalignment (C)
ABC

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Operating Instructions - Low Backlash Planetary Gear Units
Motor mounting with EK coupling
3.7 Motor mounting with EK coupling
50236AXX
Fig. 6: Motor mounting with EK coupling
1
11
10
8
2
97
8
2
PSE PSB PSF
3
626
2
6
6
4
5