A2FM180 Hydraulic Motor oilseal R909831662/R910963544 ，R902002220Seal Kit 60807 for VOE 14506826 247-8933 11095665 87413649 Piston Motor Parts

Rexroth A2FM180 Repair Kit, OEM Part Numbers & Applications

A2FM180 is a 61-series bent-axis fixed displacement piston motor with 180cc/rev, suitable for both open and closed hydraulic circuits, featuring high torque output.

✅ OEM Part Numbers for Repair Kits

1. Seal Kit (Shaft seal + O-rings, most commonly used)

- R902002220: SEAL KIT A2FM/O 160/180/61 (Original Rexroth seal kit for 61 series, compatible with A2FM160 & A2FM180)
- R987053791: Alternative OEM seal kit for A2FM180 / A2FO180 with FKM fluorine rubber, widely adopted by aftermarket manufacturers.

Contents: WDR shaft seal, housing O-rings, sealing rings for plugs.

2. Full Repair Kit (Seals + internal rotating parts: pistons, cylinder block, valve plate, retainer plate, ball joint etc.)

Rexroth does NOT have a single OEM part number for the complete overhaul kit. Original spare parts need to be ordered separately by individual part numbers.
Aftermarket full repair kits are generally named directly as A2FM180 Repair Kit, without an official unified R-number.

Motor serial numbers (for reference):

- A2FM180/61W-VAB027: R992001506
- AA2FM180: R902193869
- AA2FM180/61W-VSD181-S: R902161448

⚠️ Selection note: Full model code on the motor nameplate (e.g. /61W-VAB027) must be checked.  /61W  is the key version code. Shaft seal and flange design vary by suffix code.

📦 Repair Kit Composition

- Basic Seal Kit: Shaft oil seal, all O-rings and back-up rings. Used for repairing external leakage.
- Full Overhaul Kit: Seal set + cylinder block, piston assemblies, valve plate, retainer plate, centre ball joint, locating pins, bearings and other friction components. Used for fixing internal leakage and pressure drop issues.

🛠️ Application Scenarios for A2FM180 High Torque Motor

1. Crane & Winch (Primary application)
Winch drive for 20–50 ton truck cranes and crawler cranes; mining winches, marine deck winches and anchor windlasses. High starting torque for heavy load start-stop operations.
2. Concrete Mixer Truck
Drum drive for concrete mixers of 12m³ and above. Continuous low-speed high-torque operation.
3. Road & Piling Machinery
Travel / vibration drive for large asphalt pavers, rotary drilling rig power heads, heavy-duty road rollers.
4. Marine Industry
Deck machinery, marine winches and auxiliary steering drive, shock-resistant heavy-duty service.
5. Mining & Metallurgy
Underground conveyors, mining hoists, metallurgical roller drives, heavy-duty hydraulic rotary mechanisms.
6. Special Vehicles
Heavy-duty wreckers, rotary & travel drives for large on-board equipment.

Brief Technical Highlights

- Rated pressure: 350 bar, peak pressure up to 400 bar+
- Bent-axis fixed motor, bi-directional rotation, compatible with open & closed loop
- High output torque and good starting efficiency, ideal for low speed heavy duty working conditions