Gast 16 AM - Manual (Page 5)

1AM 10,000 28,000
1UP 6,000 14,000
2AM 3,000 30,000
4AM 3,000 14,000
6AM 3,000 6,500
8AM 2,500 8,000
16AM 2,000 15,000
General Information:
The product nameplate specifies all information required
when ordering parts or requests for information. The
type of lubricant required for unit is also specified on the
nameplate.
SPUR & WORM GEAR REDUCERS - OPERATING AND MAINTENANCE INSTRUCTIONS
Product Use Criteria:
• All worm gear reducers require that the air motor be
mounted so that the inlet and exhaust ports are at a
90º angle to the centerline of the reducer output shaft.
• Gear reducers are NOT self-locking. If a brake is
required for safety, as in the case of air pressure failure,
etc., contact your Gast Distributor/Representative.
• Some worm gear reducers may be shipped with a plug
in the top pipe plug. The plug must be removed and the
breather plug installed for proper operation.
• Check the oil level in spur gear reducers which have
been stored or not operated for a period of time.
• Gear motors require proper lubrication. Insufficient oil
level can cause loss of performance, damage or failure
of the gear reducer.
Model GR11 GR20 GR25
Speed Range 33.3 to 400 RPM 30 to 300 RPM 20 to 200 RPM
(Reducer Output Shaft)
Gear Reduction 15:1 10:1 15:1
Maximum Allowable 100 lbs/45,4 kg 200 lbs/90,8 kg @300 250 lbs/113,5 kg at 200
End Thrust With RPM to 800 lbs/363,2 kg RPM to 800 lbs/363,2 kg
Zero Overhung Load. at 30 RPM at 20 RPM
(Reducer Output Shaft)
Maximum Allowable 100 lbs/45,4 kg at 333 200 lbs/90,8 kg at 300 200 lbs/90,8 kg at 200
Overhung Load With RPM to 200 lbs/90,8 kg RPM to 600 lbs/272,4 kg RPM to 600 lbs/272,4 kg
Zero End Thrust. at 33.3 RPM at 30 RPM at 20 RPM
(Reducer Output Shaft)
Lubrication Use a 300 ssu at 100˚F/38˚C turbine quality lubricant – Gast #AG292A, Gulf
Harmony 53, Shell Tellus 33, Socony DTE heavy medium or Humble Nuto 53.
For horizontal operation, remove both plugs and add oil to top hole until
other hole overflows.
For vertical operation, fill to overflow point of upper most hole.
Spur Gear Reducer Specifications
5
Estimated Ball Bearing Life of Lubricated Air Motors
Air Motor Model Shaft speed in RP Ball Bearing Life
hours L10
Based on running pressure of 60 PSI and coupling connection to motor load. The direction,
magnitude and location of applied loads to the motor shaft will change expected bearing life.
Driving the motor with wet dirty compressed air can reduce expected bearing life. The above are
life estimates not warrantied minimum values.