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4000 Series Geroler Motors, Up To 10450 lb-in Intermittent Torque, 868 Intermittent RPM

Description & Features

Fluid Viscosity	Minimum: 70 SUS at operating temperature. Recommended Range: 100-200 SUS.
Maximum Case Pressure	1500 PSI (Without case drain). For continuous back pressure over 1500 PSI, use an external case drain line. Install line so motor case remains full at all times.
Maximum Operating Temperature	180° F.
Recommended Break-In	To assure best motor life, run motor for approximately one hour at 30% of rated pressure before application to full load. Be sure motor is filled with fluid prior to any load applications.
Recommended Filtration	Per ISO Cleanliness Code, level 18/13.
Recommended Fluids	Premium quality, anti-wear type hydraulic fluid.

Products

Model Number	Displacement	Mount	Shaft	Ports	Features
109-1101 4000 Series Geroler Motor	7.9	4 Bolt SAE B	1-1/4 in. Straight Keyed	1-1/16-12 St.Thd. O-Ring	Standard, wheel or bearingless configurations\|Lowest pressure drop motor in the industry\|Highly-efficient Geroler motor provides energy savings
109-1102 4000 Series Geroler Motor	9.9	4 Bolt SAE B	1-1/4 in. Straight Keyed	1-1/16-12 St.Thd. O-Ring	Standard, wheel or bearingless configurations\|Lowest pressure drop motor in the industry\|Highly-efficient Geroler motor provides energy savings
109-1103 4000 Series Geroler Motor	12.5	4 Bolt SAE B	1-1/4 in. Straight Keyed	1-1/16-12 St.Thd. O-Ring	Standard, wheel or bearingless configurations\|Lowest pressure drop motor in the industry\|Highly-efficient Geroler motor provides energy savings
109-1105 4000 Series Geroler Motor	19	4 Bolt SAE B	1-1/4 in. Straight Keyed	1-1/16-12 St.Thd. O-Ring	Standard, wheel or bearingless configurations\|Lowest pressure drop motor in the industry\|Highly-efficient Geroler motor provides energy savings
109-1106 4000 Series Geroler Motor	24	4 Bolt SAE B	1-1/4 in. Straight Keyed	1-1/16-12 St.Thd. O-Ring	Standard, wheel or bearingless configurations\|Lowest pressure drop motor in the industry\|Highly-efficient Geroler motor provides energy savings
109-1110 4000 Series Geroler Motor	12.5	4 Bolt SAE B	1-5/8 in. Tapered	1-1/16-12 St.Thd. O-Ring	Standard, wheel or bearingless configurations\|Lowest pressure drop motor in the industry\|Highly-efficient Geroler motor provides energy savings
109-1212 4000 Series Geroler Motor	30	4 Bolt SAE B	1-1/4 in. Straight Keyed	1-1/16-12 St.Thd. O-Ring	Standard, wheel or bearingless configurations\|Lowest pressure drop motor in the industry\|Highly-efficient Geroler motor provides energy savings
169-0201 4000 Series Geroler Motor	29.8	2 Bolt SAE A	14T 12/24 DP Spline	7/8-14 St. Thd. O-Ring	Standard, wheel or bearingless configurations\|Lowest pressure drop motor in the industry\|Highly-efficient Geroler motor provides energy savings

Product Questions & Answers (1)

Question by: Dustin A on Jan 15, 2026, 11:11 AM

What kind of fluid should I be running in this motor?

Answer by: Customer Support on Jan 16, 2026, 12:11 PM

Recommended fluid is a premium anti-wear type hydraulic fluid, kept within a viscosity range of 100–200 SUS, but it should never dip below 70 SUS at operating temperature.