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J Series Geroler Motor, 1.93 cu in/rev, 5 Bolt 1/4-28UNF Mounting Flange, 5/8 in. Straight Keyed Shaft, 9/16-18 St.Thd. O-Ring Side Ports Ports, Compact yet powerful|Extended bearing life|Increased shaft seal

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Description & Features

Perfect for agricultural augers and food processing systems the Danfoss / Eaton Char-Lynn J Series Spool Geroler is a compact yet powerful hydraulic motor. Featuring a displacement of 1.93 cu in/rev this motor ensures extended bearing life and increased shaft seal reliability.

The 5 Bolt 1/4-28UNF mounting flange provides robust mounting options while the 5/8 in. straight keyed shaft ensures efficient torque transmission. The 9/16-18 St.Thd. O-Ring side ports support a variety of fluid connections and are designed for optimal performance under high pressure.

With a maximum operating temperature of 180 F and a maximum case pressure of 1100 PSI this motor is highly durable. To ensure longevity it is recommended to use premium quality anti-wear type hydraulic fluid and follow the specified break-in procedure. The recommended fluid viscosity range is 100-200 SUS for optimal functionality.

ECCN: EAR99

Supplier Part Number: 129-0020-002

Specifications

Application
Agricultural augers, Harvesters, Seeders, Marine bow thrusters, Food processing
Design Code
2
Displacement
1.93
Displacement
1.93
Brand
Danfoss Power Solutions II (Char-Lynn)
Brand
Char-Lynn
Pack Size
1.00
UOM
EA
Features
Compact yet powerful|Extended bearing life|Increased shaft seal
Identification
None
Mount
5 Bolt 1/4-28UNF
Mount
5 Bolt 1/4-28UNF
Port Type
.5625-18 UNF-2B SAE O-Ring Ports Side Ports
Ports
9/16-18 St.Thd. O-Ring Side Ports
Ports
9/16-18 St.Thd. O-Ring Side Ports
Shaft
5/8 in. Straight Keyed
Shaft
5/8 in. Straight Keyed
Supplier Part Number
129-0020-002
Torque Rating
50 newton metre
Torque Rating
50 newton metre
Valve Options
None
Alternate Part Numbers
Alternate Part Number 129-0020-002, Alternate Part Number C1JX29, Alternate Part Number MINO-00162X04555
Product Weight
5.40 lbs

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J Series Geroler Motor, 1.93 cu in/rev, 5 Bolt 1/4-28UNF Mounting Flange, 5/8 in. Straight Keyed Shaft, 9/16-18 St.Thd. O-Ring Side Ports Ports, Compact yet powerful|Extended bearing life|Increased shaft seal

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Product Questions & Answers (3)

Question by: Johnny C on Feb 19, 2026, 4:02 PM
what's the break-in procedure on this motor? running it on an auger setup and don't wanna burn it up right out of the gate
Answer by: Customer Support on Feb 21, 2026, 2:09 PM
Run it at roughly 30% of rated pressure for about an hour before you put it under a full load. Make sure the motor is primed with fluid before you apply any load at all. Skipping that step is usually what shortens the life on these things faster than anything else.
Question by: Neil W on Jul 6, 2025, 12:07 PM
Reckon this motor would work alright on my grain auger?
Answer by: Customer Support on Jul 8, 2025, 7:12 AM
For agricultural augers, this J Series Geroler motor is a good fit. It's designed to be compact but still pack a good punch.
Question by: Ray C on Jun 26, 2025, 11:51 AM
got a J series char-lynn motor here, how do i tell if this one matches up on the mount and shaft?
Answer by: Customer Support on Jun 28, 2025, 8:13 AM
Fit comes down to the interface details: it uses a 5 bolt mounting flange with 1/4-28 UNF bolts, and the output is a 5/8 inch straight keyed shaft. The work ports are side ports with 9/16-18 straight thread SAE O-ring (UNF-2B) connections.