Sumitomo Drive Technologies PARAMAX M Series User manual

These products should be handled, installed, and maintained by trained technicians.
Carefully read the maintenance manual before use.
Oil is removed from these products before shipment. Supply oil according to the
maintenance manual before operation.
A copy of this maintenance manual should be sent to the actual user.
This maintenance manual should be kept by the user for future reference.
PARAMAX®
M Series
No.GM0102E-6Maintenance Manual
CAUTION

1
●Carefully read this maintenance manual and all accompanying documents before use (installation, operation,
maintenance, inspection, etc.). Thoroughly understand the machine, information about safety, and all precautions
for correct operation.
After reading, retain this manual for future reference.
●Pay close attention to the "DANGER" and "CAUTION" warnings regarding safety and proper use.
Improper handling may result in physical damage, serious personal injury and / or
death.
Improper handling may result in physical damage and/ or personal injury.
Matters described in may lead to serious danger depending on the situation. Be sure to observe
important matters described herein.
DANGER
●
●
●
●
●
Introduction: Safety Precautions
DANGER
!
CAUTION
!
CAUTION
!
Transport, installation, plumbing, operation, maintenance, and inspections should be handled by prop-
erly trained technicians; otherwise, personal injury or damage to the machine may result.
When using the equipment in conjunction with explosion proof motor, a technician with electrical
expertise should supervise the transport, installation, plumbing, wiring, operation, maintenance and
inspection of the equipment, so as to avoid a potentially hazardous situation that may result in electrical
shock, re, explosion, personal injury and/or damage to the equipment.
When the unit is to be used in a system for human transport, a protecting device for human safety
should be installed to prevent accidents resulting in personal injury, death, or damage to the equipment
due to running out of control or falling.
When the unit is to be used for an elevator or lifter, install a safety protecting device on the elevator side
to prevent falling; otherwise, personal injury, death, or damage to the equipment may result.
Do not disassemble the drive unit or reducer during operation. Even if it is stopped, do not disassemble
except dip stick, oil lling/drain port or inspection cover when input/output shaft of the reducer is con-
nected to motor or driven machine: otherwise, personal injury, or damage to the equipment due to run-
ning out of control or falling by unmeshing gear and the like may result.

2
Introduction: Reading the Maintenance Manual, Table of Contents
Contents
Introduction : Safety Precautions …………………………………………………………………………………… 1
Introduction: Reading the Maintenance Manual, Table of Contents ……………………………………………… 2
1. Inspection Upon Delivery ………………………………………………………………………………………… 3
2. Storage …………………………………………………………………………………………………………… 5
3. Transport …………………………………………………………………………………………………………… 6
4. Installation ………………………………………………………………………………………………………… 7
5. Connecting to Machinery ………………………………………………………………………………………… 8
6. Operation ………………………………………………………………………………………………………… 9
7. Daily Maintenance and Inspection ……………………………………………………………………………… 10
8. Troubleshooting …………………………………………………………………………………………………… 15
9. Construction Drawing …………………………………………………………………………………………… 16
10. Oil Quantity ……………………………………………………………………………………………………… 18
11. Oil Filler and Drain Plug Locations ……………………………………………………………………………… 19
12. Warranty ………………………………………………………………………………………………………… 20
This is a maintenance manual for Paramax M Series.
Please refer to Motor Maintenance Manual (No. MM1001E) for unit with motor.

3
1. Inspection Upon Delivery
CAUTION
●
●
●
1-1 How to Check the Nameplate
①Reducer Model
②Reduction Ratio
Input Power
③Serial Number
Fig. 1-1 Nameplate
Service Factor
①
②
③
U
4
5
P
0
0
0
0
0
5
R
MODEL
RATIO SF
INPUT
SERIAL NO.
k W
ｒ/min
JAPAN
Unpack the unit after verifying that it is positioned right side up; otherwise, personal injury may result.
Verify that the unit received matches your order. Installing an incorrect product may result in personal
injury or damage to the equipment.
Do not remove the nameplate.
Verify the items listed below upon receiving the product. If a nonconformity or problem is found, con-
tact our nearest agent, distributor, or sales oce.
(1) Does the description on the nameplate match your order?
(2) Were there any parts damaged during transport?
(3) Are all bolts and nuts tightened rmly?
Please refer to sample nameplate below.
When making an inquiry, advise us of ①MODEL ②RATIO ③SERIAL NO.

4
1-2 Nomenclature
1. Inspection Upon Delivery
13CDM ANCV 20
Series
M M Series
Type
Shaft arragement Nominal reducion ratio
Size
No. of gear stage
Assembly
1 Parallel shaft Horizontal
2 Parallel shaft Vertical
3
Right angle shaft Horizontal
4 Right angle shaft Vertical
5 Parallel shaft Horizontal with motor
6 Parallel shaft Vertical with motor
Auxiliary type (Model)
Blank Cast iron housing
A Steel housing
LS
LS drop bearing housing
L1 L1 drop bearing housing
Auxiliary type (Mounting)
Blank Horizontal
V Vertical
Y Inclined
Symbol meanings are shown below. Please conrm that the nomenclature matches the order.
In case of special type, it may not be shown below.

5
If this product is not for immediate use, note the following points when storing.
2-1 Storage Location
Store the product indoors in a clean, dry location.
Do not store outdoors. Store in a location that is free of moisture, dust, extreme temperature changes, corrosive
gas, etc.
2-2 Storage Period
・The storage period should be within 6 months.
・Standard rustproof specications
External rustproof Rust prevention oil is applied when shipping from the factory. Check rust conditions ev-
ery 6 months after shipment. Reapply the rust prevention process, if necessary.
Internal rustproof Rustproof period 6 months
Store in an ordinary factory or warehouse in an environment where free of moisture, dust,
extreme temperature changes, corrosive gas, etc.
・If the storage period exceeds 6 months or for export , adherence to special rust prevention specications is
required. Please consult factory.
・If the storage period exceeds 6 months, operate the unit for few minutes with no load every 2 to 3 months.
2-3 Operation After Storage
・
Oil seals are aected by temperature, ultraviolet light and other ambient conditions and can easily degrade.
After long storage period, inspect before operation, and replace any degraded seals with new seals.
・If the storage period exceeds 2 years, change the oil seal and grease before operation.
・
At startup, check that there are no abnormal sound, vibration, temperature rise, or other symptoms. If any ab-
normalities are found, immediately contact the nearest authorized service station.
2. Storage

6
3. Transport
DANGER
●
Do not stand directly under a unit suspended by a crane or other lifting mechanism; otherwise, personal
injury, or death may result.
CAUTION
●Exercise ample care so as not to drop the unit.
When a hanging bolt or hole is provided, be sure to use it. After mounting a unit to a machine, do not
hoist the entire machine using the hanging bolt or hole; otherwise, personal injury or damage to the
equipment and/ or lifting device may result.
●
Before hoisting, refer to the nameplate, crate, outline drawing, catalog, etc. to check the weight of the
unit. Never hoist a unit that exceeds the rating of the crane or other mechanism being used to lift it;
otherwise, personal injury or damage to the equipment and/ or lifting device may result.
●Use proper hanging metal tting and make sure hanging bolt and nut are not loosened before lifting.

7
CAUTION
●
Do not use the products for purposes other than those shown on the nameplate or in the
manufacturing specications; otherwise, electric shock, personal injury, or damage to the equipment
may result.
●Do not place ammable objects around the reducer; otherwise, re may result.
●
Do not place any object around the educer that will hinder ventilation. Insucient ventilation can cause
excessive heat build-up that may result in burns or re.
●
Do not step on or hang from the reducer; otherwise personal injury or damage to the equipment may
result.
●
Do not touch the shaft end or inside keyways; otherwise personal injury may occur.
●When the unit is used in food processing applications, install an oil pan to protect against oil
contamination that may occur during equipment breakdown or failure; otherwise, oil leakage may
damage the products.
4-1 Installation Location
Ambient temperature -10 to 40℃
Ambient humidity Max. 85%
Atmosphere No corrosive or volatile gases, no steam
Dust-free, well-ventilated area.
Installation location Indoors (Dry area with minimal dust)
・Special reducers are required for installation conditions not described in these guidelines.
・Reducers made for outdoor, explosion-proof or other special conditions are designed to operate under
those conditions without any problem.
・Install reducers where inpection, maintenance and repair operations can be performed easily.
・Install reducers on a suciently rigid base.
4-2 Installation Angle
Install reducers on a level base. (Contact factory for installation on an inclined base)
When the unit is manufactured for inclined installation, do not install it at any angle other than the one specied.
4-3 Installation Method
・Install reducers on a suciently rigid base and use installation bolts corresponding to JIS strength class 10.9 or its
equivalent.
・Use dowel pin when vibration or impact is high.
・Alignment for reducer with motor mounted on the base plate is done prior to shipment. However due to
misalignment occurs during transport or condition of concrete base, re-align when install.
・
The rust preventive oil is applied to input shaft, output shaft, key and installing surface. Remove by wash
oil before installing. Do not use special solvent or sand paper.
4. Installation

8
CAUTION
●Conrm the rotation direction before connecting to the driven machine. Incorrect rotation direction
may cause personal injury or damage to the equipment.
●
Remove the key temporarily attached to the output shaft when the reducer operates alone; otherwise,
personal injury may occur.
●Install appropriate guard devices around rotating parts ; otherwise, personal injury may result.
●
When connecting the product with a load, check that the alignment, belt tension and parallelism
of the pulleys are within the specied limits. When the unit is directly connected to other machinery,
check that the accuracy of direct connection is within the specied limits. When a belt is used to
connect the unit to other machinery, check the belt tension. Correctly tighten bolts on the pulley and
coupling before operation; otherwise, personal injury or damage to the equipment may result due to
debris scattering.
5-1 Installation of Coupling
・When attaching a coupling, do not to apply impact force or excessive thrust to the shaft; otherwise, the bearing
may be damaged.
・Shrink t or shaft-end thread is recommended for mounting (Fig. 5-1).
(1) Coupling
・The dimensions (A, B and X) illustrated in Fig. 5-2 must be within the tolerance
shown in Table 5-1.
(2) Chain, Sprocket and Gear
・The chain tension angle must be perpendicular to the shaft of reducer.
・The pitch circle of the sprocket and gear must be more than three times of the shaft diameter.
・Locate the sprocket and gear as close to reducer as possible so the load point will be closer to the reducer's
vertical center line (Fig. 5-3).
(3) V Belt
・Excessive V belt tension will damage the output shaft or bearing. Refer to the V belt catalogue for tension.
・The parallelism, eccentricity β of the two pulleys should be within 20´. (Fig. 5-4)
・Use a matched set with identical circumferential length when more than one V belt is used.
Table 5-1 Coupling alignment tolerance
Tolerance for A dimension 0.05mm
Tolerance for B dimension 0.05mm
X dimension Specied by coupling manufacturer
Fig. 5-1
Coupling Shaft
Shaft-end thread
XX
A
B
Fig. 5-2
Fig. 5-3 Fig. 5-4
β
β
Reducer
Coupling
Shaft
5. Connecting to machinery

9
DANGER
●Do not approach or touch rotating parts (output shaft, etc.) during operation; otherwise loose
clothing may become caught in these rotating parts and cause serious injury or death.
CAUTION
●Do not put ngers or foreign objects into the opening of reducer; otherwise, electric shock, personal
injury, re, or damage to the equipment may result.
●The reducer becomes very hot during operation. Touching the unit may result in burns.
●Do not remove the inspection cover during operation; otherwise, hot splashing lubricant may cause
burns.
●To operate the unit in reverse, completely stop it once before starting it in reverse; otherwise, damage
to the equipment may result.
●Do not loosen the oil ller plug during operation; otherwise, hot, splashing lubricant may cause burns.
●If any abnormality occurs during operation, stop operation immediately; otherwise, electric shock,
personal injury, or re may result.
●Do not operate the unit in excess of the load rating; otherwise, personal injury, or damage to the
equipment may result.
・Reducers are shipped without oil. Units must be lled with the proper amount of recommended oil prior to
start-up.
・For long term rust prevention, export rust prevention or sealed lubricant specication, hole for air breather is
plugged. Replace the plug with attached air breather after installing.
・For special piping, pipes are shipped as accessory to avoid the damage during transport. Plumb the pipe after
installing.
After the unit is installed and lled with oil, check the following items before operating.
・Is the unit properly connected to the driven machine?
・Are mounting bolts tightened rmly?
・Is the direction of rotation correct?
・Is the oil lled to the correct oil level at stop?
After conrming above items, conduct a trial run with light load. Move on to actual operation after conrming
that there is no abnormal sound, vibration, and/or temperature rise.
Check the items shown in Table 6-1.
Table 6-1 Check List
Is the reducer generating an abnormal
sound or vibration?
・Is the housing deformed because the installation surface is not at?
・
Is insucient rigidity of the installation base generating abnormal sound?
・Is the shaft center aligned with the driven machine?
・Is the vibration of the driven machine transmitted to the reducer?
Is the surface temperature of reducer
abnormally high?
・Is the ambient temperature too high?
・Is the oil at the specied level?
If any abnormally is found, stop operation and contact our nearest agent, distributor, or sales oce.
6. Operation

10
DANGER
●Do not approach or touch any rotating parts (output shaft, etc.) during run-time maintenance or
inspection of the unit; otherwise loose clothing may become caught in these rotating parts and cause
serious injury or death.
●
When shutdown inspection is conducted to check the tooth surface, make sure to stop the motor and
driven unit; otherwise, loose clothing may become caught in the gear meshing part and cause serious
injury or death.
●Do not operate the unit without a safety cover (removed during inspection) in place to shield rotating
parts; otherwise loose clothing may become caught in these rotating parts and cause serious injury or
death.
CAUTION
●Do not put ngers or foreign objects into the opening of the reducer; otherwise, electric shock, personal
injury, re, or damage to the equipment may result.
●The reducer becomes very hot during operation. Touching the unit with bare hands may cause serious
burns.
●Promptly identify and correct according to the maintenance manual if any abnormalities observed
during operation. Do not operate until abnormality is corrected.
●Change lubricant according to the maintenance manual. Be sure to use factory recommended lubricant:
otherwise damage to the equipment may result.
●Do not change lubricant during operation or immediately after stopping operation; otherwise, burns
may occur.
●Do not operate damaged reducer; otherwise, personal injury, re, or damage to the equipment may
result.
●We cannot assume any responsibility for damage or personal injury resulting from an unauthorized
modication by a customer, as it is out of warranty.
●Dispose reducer and/or lubricant in accordance with local regulations.
7-1 Daily Inspection
To ensure proper and continued optimum operation, use Table 7-1 to perform daily inspection.
Table 7-1 Daily inspection
Inspection items Inspection details
Noise Is there abnormal sound coming from the reducer? Is there sudden change
in sound?
Vibration Is there excessive vibration ? Does vibration change suddenly?
Surface temperature
Is the surface temperature abnormally high (higher than 80℃)? Does the
surface temperature rise suddenly? (The temperature rise during operation
diers according to the models. It is no problem even if surface tempera-
ture is around 70 ℃, as long as it is steady.)
Oil level Does the oil level reach the top line of the oil gauge? (Check it with a dip-
stick or oil gauge while the machine is shut down.)
Lubrication Forced lubrication
Is the function of oil signal or ow gauge normal?
If functioning abnormally, which means lubrication failure due to inad-
equate oil, broken pump or clogging pipe, stop the unit and inspect.
Oil or grease leakage Does oil or grease leak thru oil seal?
Foundation bolt Are foundation bolts loose?
Chain, V belt Are chain and V-belt loose?
When any problem is found during daily inspection, take corrective measures listed in section 8. Troubleshooting.
If the problem cannot be corrected, contact our nearest agent, distributor, or sales oce.
7. Daily Inspection and Maintenance

11
DANGER
●For equipment with a motorized oil pump, run the pump prior to starting the reducer. Start motor of re-
ducer after lubricant has circulated through the bearings; otherwise, the damage to the equipment may
result.
7-2 Check the Lubrication Method
・Please look for the relevant items and make certain to do maintenance. Neglecting maintenance is a source of
trouble.
・Provide ow switch or ow sight to check the circulation of the lubricant. Stop the reducer when abnormality
occurs.
・
Lubrication method may diers from Table 7-2 depending on specication. Check the manufacturing specication
for details.
Table 7-2 Standard Lubrication
Lubrication
Gear Bearing
Horizontal Oil bath lubrication Oil bath or grease lubrication
Vertical Oil bath or splash lubrication
Grease lubrication is applied to the upper surface and the
right angle shaft input, and oil bath lubrication is applied to
the other parts.
7-3 Lubrication Maintenance
(1) Oil Change Interval
Table 7-3 Oil Change Interval
Interval Usage conditions
Oil lling At purchasing −
Oil
change
1st time After 500 hours or 6 months, whichever comes rst −
2nd time After 2500 hours or 6 months, whichever comes rst −
3rd time or
later
Every 5000 hours or one year, whichever comes rst Oil temperature is below 70℃
Every 2500 hours or half year, whichever comes rst Oil temperature is 70℃or higher
・
Please consult oil manufacturer when atmosphere contains corrosive gas or where ambient temperature changes
dramatically.
(2) Grease Interval
Table 7-4 Grease Interval
Interval Input speed
Every 1500 hrs 750 r/min or slower
Every 1000 hrs 750 r/min to 1800 r/min
・The grease lubricated models are packed with grease prior to shipment and attached grease nipple and grease
discharge plug. Please check the number of grease nipples and their positions carefully.
・Please check with the specication whether there is grease lubrication.
7. Daily Inspection and Maintenance

12
7. Daily Inspection and Maintenance
(3) Lubricant selection
Refer to Table 7-5 to select appropriate oil viscosity. Table 7-6 shows recommended lubricants.
Table 7-5 Oil Viscosity
Ambient temperature °C
-10 to 16 10 to 50
ISO*/AGMA VG68/2EP VG150/4EP
* : Viscosity at ISO 40°C (mm2/s)
Table 7-6 Recommended Lubricant
Viscosity
Classication
(ISO)
mm²/s (40°C)
AGMA BP CASTROL CHEVRON TEXACO EXXON MOBIL SHELL TOTAL
liOraeG
VG68 2EP ENERGOL
GR-XP-68
ALPHA
SP68
OPTIGEAR
BM68
TRIBOL
1100/68
GEAR
COMPOUNDS
EP68
MEROPA
WM68 -MOBILGEAR
600XP 68
Shell
Omala
S2 G 68
CARTER
EP68
VG150 4EP ENERGOL
GR-XP-150
ALPHA
SP150
OPTIGEAR
BM150
TRIBOL
1100/150
GEAR
COMPOUNDS
EP150
MEROPA
WM150
SPARTAN
EP150
MOBILGEAR
600XP 150
Shell
Omala
S2 G 150
CARTER
EP150
Bearing grease ENERGREASE
LS EP2
SPHEEROL
AP3
Olista
Longtime
3EP
TRIBOL
3020/
1000-2
DURALITH
GREASE 68
MULTIFAK
EP2
BEACON
EP2
MOBILPLEX
48
Shell
Gadus
S2 V 220 2
MULTIS
EP2
(4) Oil Quantity
An estimated oil quantity for standard specifications is shown in “10. Oil quantity". Use a dipstick or visible oil
gauge to check the oil level even after lling with indicated oil quantity.
(5) Fill/Drain oil
Supply oil through the lling port on top of the main unit. Check the oil level with a dipstick or visible oil gauge.
(Fig. 7-1).
Screw the dipstick to its deepest position to check the oil level; otherwise, the measured oil level will be incorrect.
(Fig. 7-2).
Prevent bolt, washer, dust, water or other foreign object from entering during oil-lling process.
If the oil level is lower than the range, the unit will not be lubricated suciently.
If the oil level is higher than the range, deterioration of the oil is accelerated due to oil temperature rise.
Remove drain plug located lower part of the unit to drain when lubricant is still warm.
Fig. 7-1 Fig. 7-2
Dip stick Sight gauge (Oil gauge)
Oil level should be
within this range.

13
7. Daily Inspection and Maintenance
(6) Fill/Drain Grease
• Except for some models, bearings are grease lubricated. Verify the number and locations of the grease ttings.
• Grease is supplied before shipment. For grease supply after starting operation, supply necessary amount according
to the following table 7-7.
Do not exceed the recommended amount of grease.
Table 7-7 Grease replenishment interval and amount
Parallel shaft Horizontal (Assembly 1, 5)
Double Reduction Unit: hour Triple Reduction Unit: hour Quadruple Reduction Unit: hour
Size Input speed r/min
Replenishing
quantity
gSize Input speed r/min
Replenishing
quantity
gSize Input speed r/min
Replenishing
quantity
g
1800 1500 1200 1000 1800 1500 1200 1000 1800 1500 1200 1000
A
Oil bath
A
6 months 6 months
6 months 6 months
10 A
6 months 6 months
6 months 6 months
10
B B 3000 3000 B
C C 15 C
D D
2000 3000 20 D3000 3000E E 2000 3000 E 15
F F 30 F
2000 20 G G 1000 1000 2000 G 2000 3000
3000
H H
1000
2000
50
H
30K K 500
Note 2
1000 K1000 1000 2000
L L 500
Note 2
L
Parallel shaft Vertical (Assembly 2, 6)
Double Reduction Unit: hour Triple Reduction Unit: hour Quadruple Reduction Unit: hour
Size Input speed r/min
Replenishing
quantity
gSize Input speed r/min
Replenishing
quantity
gSize Input speed r/min
Replenishing
quantity
g
1800 1500 1200 1000 1800 1500 1200 1000 1800 1500 1200 1000
A
2000 2000
2000 2000
10 A
2000 2000 2000 2000
10 A
2000 2000
2000
2000
10
B20 B B
C C 15 C
D 1000 1000 30 D 1000 20 D
E
Forced
lubrication
Note 3
Forced
lubrication
Note 3
50
E
Forced
lubrication
Note 3
Forced
lubrication
Note 3
E 15
F
Forced
lubrication
Note 3
Forced
lubrication
Note 3
F
Forced
lubrication
Note 3
Forced
lubrication
Note 3
30 F20
GGG
1000 1000
H70 H
50
H
30K K K 1000
L 100 L L
Right angle shaft Horizontal and Vertical (Assembly 3, 4)
Double Reduction Unit: hour Triple Reduction Unit: hour Quadruple Reduction Unit: hour
Size Input speed r/min
Replenishing
quantity
gSize Input speed r/min
Replenishing
quantity
gSize Input speed r/min
Replenishing
quantity
g
1800 1500 1200 1000 1800 1500 1200 1000 1800 1500 1200 1000
A 3000 3000
6 months 6 months 20 A 3000 6 months 6 months 6 months
20 A
6 months 6 months 6 months 6 months
10
B2000 2000 3000 3000 40 B 3000 B
20C
2000
C
2000 2000
3000
3000
30 C
D
1000
1000
2000
60 D
2000
40 D 3000 3000
E
100
E E 2000
2000
3000
3000
30
F
1000
F
1000
1000
2000
60 F40
G500
Note 2
1000
G G
1000 2000
H150 H
100
H
60
K
Forced
lubrication
Note 3
500
Note 2
K
1000
K
1000 2000
L
Forced
lubrication
Note 3
500
Note 2
200 L 500
Note 2
1000 L
Note: 1. The above tables show the service intervals and the amount of oil required for high speed shaft bearings. For intermediate shaft
bearings and low speed shaft bearings, double the service intervals.
2. Forced lubrication may be used depending on the specications.
3. Grease lubrication may be used depending on the specications.
The lower bearing of the output shaft is given grease lubrication, if the output shaft is facing downward. Therefore, replenish
grease every 6 to 12 months.
4. Replenish grease every 6 to 12 months is recommended even if the total operation time is less than that mentioned in the tables.
・Supply grease during operation in order to apply the grease evenly.
・Supply grease slowly.
・When new grease is supplied, the grease that was left over is mixed with the lubricant; it does not aect the
performance of lubricant if changing lubricant regularly.

14
7. Daily Inspection and Maintenance
7-4 Parts Maintenance
To increase the reducer's service life, overhaul and replace below items every 3 to 5 years. Please contact factory
for overhaul.
Replacement parts
■Bearing, oil seal, nilos ring, collar, key, shim, packing, retaining ring or visible gauge
■Check and replace if the shaft or gear is damaged
■Check other parts (including special application) when required
7-5 Oil Cooler (Optional) Maintenance
・Inspect and clean the cooling pipe and water cooler unit regularly. Inspection term depends on the lubricant
condition or quality of cooling water, at least perform every 3 to 6 months.
・Even though regular inspection and cleaning is performed, water leakage due to corrosion may occur if water
quality management is insucient.
・Quality of cooling water should conform to water quality standard guideline, JRA-GL 02-1994 (Table 7-8).
(1) Maintenance of Cooling Pipe
・Cooling pipe can be removed from reducer after draining lubricant and removing bolts for cooling pipe. Inspect
the cooling pipe after removing the bolts and separating with cover.
・Drain cooling water if not operate for long time. Remaining water may cause corrosion. Drain cooling water un-
der the environment where water freezes in winter as well.
(2) Maintenance of Water-Cooler Unit
・Check the condition of piping outside by removing the bonnet at water U-turn side. Check the condition of
piping inside after draining the oil from drain plug.
・Check the corrosion-proof zinc and replace it if it is less than half size. Depending on water quality, it may be nec-
essary to replace in 3 to 6 months.
・Drain cooling water every day under the environment where water freezes in winter.
Table 7-8 Cooler Water Quality Standard (JRA-GL 02-1994）
Item Standard value
（Circulating cooling water）
Standard
Items
pH (25°C) 6.5 to 8.2
Electric conductivity (25°C) mS/m Not exceeding 80
Chloride ion mg/L Not exceeding 200
Sulfuric acid ion mg/L Not exceeding 200
Acid consumption amount (pH4.8) mg/L Not exceeding 100
Total hardness mg/L Not exceeding 200
Calcium hardness mg/L Not exceeding 150
Ionic state silica mg/L Not exceeding 50
Reference
Items
Iron mg/L Not exceeding 1.0
Copper mg/L Not exceeding 0.3
Sulde ion mg/L Not detected
Ammonium ion mg/L Not exceeding 1.0
Residual chlorine mg/L Not exceeding 0.3
Free carbon mg/L Not exceeding 4.0
Stability index 6.0 to 7.0

15
CAUTION
●
Identify any abnormalities during operation and take appropriate corrective action outlined in this
maintenance manual. Do not operate the unit until corrective action has been taken.
Refer to Table 8-1 whenever the reducer is operating abnormally and take the appropriate corrective action im-
mediately . Consult factory if not recovered.
Table 8-1 Troubleshooting Guide
Symptom Cause Measure
The output shaft does not rotate
at no-load. Damage to gear/shaft due to over load Confer with authorized service station.
The output
shaft rotates at
no-load.
When load is
applied, the
output shaft
stops.
The key is missing. Install a key.
The bearing is burned. Confer with authorized service station.
Poor adjustment of protective device Adjust the protect device.
Rotates in reverse. Wiring error Wire correctly.
Excessive temperature rise
Overload Decrease the load to the specied
value.
Damage to bearing Confer with authorized service station.
The ambient temperature is high. Improve the ventilation.
Damage to gear/bearing due to over
load Confer with authorized service station.
Oil leakage
Oil leaks from
the input/out-
put shaft.
Damage to oil seal Confer with authorized service station.
Scratches or abrasion on the shaft
where the sealing lip touches Confer with authorized service station.
Oil leaks from
the split line of
housing.
Loose bolt Tighten the bolt to proper torque.
Abnormal sound
Excessive vibration
Damage to gear/shaft/bearing Confer with authorized service station.
Housing is deformed due to uneven
installation surface.
Flatten the installation surface or use
liners for adjustment.
Resonance due to insucient rigidity
of installation base
Reinforce the installation base to im-
prove the rigidity.
Misalignment with driven machine Align the shaft center.
Vibration of driven machine transmit-
ted to the reducer
Operate the reducer alone to check the
noise source.
8. Troubleshooting

16
9. Construction Drawings
9-1 Construction Drawings (Parallel Shaft)
Table 9-1 Parts List
No. Part Name
1 Dip Stick
2 Housing
3 Bearing
4 Key
5 Helical Gear
6 Key
7 Key
8 Oil Seal
9 High Speed Shaft
10 Collar
11 Bearing
12 Nilos-ring
13 Key
14 Helical Pinion
15 Helical Gear
16 Intermediate shaft
17 Key
18 Bearing
19 Helical Pinion
20 Helical Pinion Shaft
21 Bearing
22 Slow Speed Shaft
23 Collar
24 Oil Seal
25 Helical Gear
Table 9-2 Parts List
No. Part Name
1 Dip Stick
2 Housing
3 Bearing
4 Key
5 Helical Gear
6 Bearing
7 Key
8 Nilos-ring
9 Bearing
10 Key
11 Oil Seal
12 High Speed Shaft
13 Collar
14 Bearing
15 Oil thrower
16 Key
17 Helical Pinion
18 Intermediate shaft
19 Key
20 Helical Gear
21 Helical Pinion
22 Helical Pinion Shaft
23 Oil Seal
24 Collar
25 Slow Speed Shaft
26 Flange cylinder
27 Helical Gear
Fig. 9-1 Horizontal Parallel Shaft Triple Reduction
Fig. 9-2 Vertical Parallel Shaft Triple Reduction
321 4 5 6 7 8 9 10 11 12 13
22232425 21 20 19 18 17 16 15 14
1 2 3 4 8 5 6 7 8 9 10 11 12 13 14
22232425 21 20 19 18 17 16 152627 8

17
9. Construction Drawings
9-2 Construction Drawings (Right Angle Shaft)
Table 9-3 Parts List
No. Part Name
1 Dip Stick
2 Bearing
3 Key
4 Helical Gear
5 Bearing
6 Helical Pinion Shaft
7 Bearing
8 Key
9 Intermediate shaft
10 Spiral Bevel Gear
11 Bearing
12 Bearing
13 Oil Seal
14 Bevel Pinion Shaft
15 Collar
16 Nilos-ring
17 Helical Pinion
18 Key
19 Helical Gear
20 Key
21 Slow Speed Shaft
22 Collar
23 Oil Seal
24 Housing
Table 9-4 Parts List
No. Part Name
1 Dip Stick
2 Bearing
3 Key
4 Helical Gear
5 Bearing
6 Nilos-ring
7 Helical Pinion Shaft
8 Oil Retainer
9 Intermediate shaft
10 Spiral Bevel Gear
11 Housing
12 Bearing
13 Bearing
14 Oil Seal
15 Bevel Pinion Shaft
16 Collar
17 Helical Pinion
18 Key
19 Bearing
20 Helical Gear
21 Key
22 Slow Speed Shaft
23 Collar
24 Oil Seal
25 Flange cylinder
Fig. 9-3 Horizontal Right Angle Shaft Triple Reduction
Fig. 9-4 Vertical Right Angle Shaft Triple Reduction
21 222324 20 19 18 17 16 15
14
1 2 3 4 5 6 7 8 9 10 11 12 13
2122 2324
321 4 5 6 7 8 9 10 11
20 19 18 17 166
12
6 6 13 14 15
25

18
10. Oil Quantity
Table 10-1 N Type Oil Quantity Unit: Liter
Size
Double reduction Triple reduction Quadruple reduction
Parallel shaft Right angle shaft Parallel shaft Right angle shaft Parallel shaft Right angle shaft
Horizontal Vertical Horizontal Vertical Horizontal Vertical Horizontal Vertical Horizontal Vertical Horizontal Vertical
Assembly
1, 5
Assembly
2, 6
Assembly
3
Assembly
4
Assembly
1, 5
Assembly
2, 6
Assembly
3
Assembly
4
Assembly
1, 5
Assembly
2, 6
Assembly
3
Assembly
4
A67456475- - - -
B 10 12 8 7 11 7 12 9 - - - -
C 13 13 11 8 18 10 17 12 - - - -
D 18 19 18 14 30 19 31 22 - - - -
E 26 35 24 26 43 29 45 32 - - - -
F 40 56 41 51 75 42 75 53 - - - -
G 82 86 80 82 135 68 137 90 - - - -
H 115 98 100 90 140 70 134 128 136 119 141 154
K 160 130 130 112 193 110 180 185 195 173 191 180
L 215 190 135 180 257 160 250 265 275 228 273 300
able 10-2 D Type Oil Quantity Unit: Liter
Size
Double reduction Triple reduction Quadruple reduction
Parallel shaft Parallel shaft Right angle shaft Parallel shaft Right angle shaft
Horizontal Vertical Horizontal Vertical Horizontal Vertical Horizontal Vertical Horizontal Vertical
Assembly
1, 5
Assembly
2, 6
Assembly
1, 5
Assembly
2, 6
Assembly
3
Assembly
4
Assembly
1, 5
Assembly
2, 6
Assembly
3
Assembly
4
A4644544455
B71187868855
C 11 12 13 11 12 10 13 16 12 12
D 21 17 24 17 23 22 24 22 24 24
E 38 38 43 35 44 34 43 53 44 42
F 60 57 71 40 70 56 71 67 72 79
G 105 90 126 70 125 100 121 115 122 139
Note: The oil amounts shown in the table are for continuous operation at the standard input speed
(1000 to 1800 r/min).
If the operating conditions are dierent, the lubrication method and the oil level may not be the same.
Be sure to check the oil level with a dip stick or a sight gauge (oil gauge).