08/05/2026
The BM6.6K series cycloidal hydraulic motor is a low-speed, high-torque hydraulic motor with end-face flow distribution and a stator-rotor structure. It is a complete equivalent replacement for the Eaton Char-Lynn 6000/6K series and Danfoss OMT series motors. It is a high-quality product designed to provide stable and reliable power solutions for high-end customers such as construction machinery manufacturers, agricultural equipment factories, and mining machinery companies. It employs advanced planar flow distribution technology with automatic wear compensation, resulting in high volumetric efficiency. The double tapered roller bearing design can withstand high radial and axial loads. Excellent shaft sealing performance allows it to withstand high back pressure. Low starting pressure and smooth low-speed operation make it suitable for various low-speed, heavy-duty transmission scenarios.
Full Series Models and Displacements
The BM6.6K series includes 8 standard displacement models, with complete model names named BM6-### (or 6K-###), where ### represents the displacement value (unit: ml/r). Specific models are as follows:
1. BM6-195 (6K-195): Displacement 195 ml/r
2. BM6-245 (6K-245): Displacement 245 ml/r
3. BM6-310 (6K-310): Displacement 310 ml/r
4. BM6-390 (6K-390): Displacement 390 ml/r (some manufacturers label it as 395 ml/r)
5. BM6-490 (6K-490): Displacement 490 ml/r
6. BM6-625 (6K-625): Displacement 625 ml/r (some manufacturers label it as 630 ml/r)
7. BM6-800 (6K-800): Displacement 800 ml/r (some manufacturers label it as 759.6 ml/r)
8. BM6-985 (6K-985): Displacement 985 ml/r (some manufacturers label it as 981.6 ml/r)
III. Domestic and International Part Numbers (Original and Replacement)
Domestic Part Numbers (Reference)
• BM6-195: YL-BM6-195, RN-BM6-195, BL-BM6-195
• BM6-245: YL-BM6-245, RN-BM6-245, BL-BM6-245
• BM6-310: YL-BM6-310, RN-BM6-310, BL-BM6-310
• BM6-390: YL-BM6-390, RN-BM6-390, BL-BM6-390
• BM6-490: YL-BM6-490, RN-BM6-490, BL-BM6-490
• BM6-625: YL-BM6-625, RN-BM6-625, BL-BM6-625
• BM6-800: YL-BM6-800, RN-BM6-800, BL-BM6-800
• BM6-985: YL-BM6-985, RN-BM6-985, BL-BM6-985
Original foreign part numbers (Eaton Char-Lynn 6K series)
• 6K-195: 112-1067-006, 112-1067-005
• 6K-245: 112-1068-006, 112-1068-005
• 6K-310: 112-1069-006, 112-1069-005
• 6K-390: 112-1070-006, 112-1070-005
• 6K-490: 112-1071-006, 112-1071-005
• 6K-625: 112-1072-006, 112-1072-005 (632AG00087A)
• 6K-800: 112-1073-006, 112-1073-005
• 6K-985: 112-1074-006, 112-1074-005
IV. Core Technical Parameters (Uniform and Differentiation Across the Series)
General Parameters
• Structure: End-face distribution cycloidal type (Geroler motor)
• Rated operating pressure: 16 MPa (continuous), 25 MPa (intermittent)
• Maximum speed: Continuous 150-776 rpm, Intermittent 200-1000 rpm (decreases with increasing displacement)
• Maximum flow rate: Continuous 150-160 L/min, Intermittent 200-220 L/min
• Output shaft: Diameter 44 mm, 16-spline shaft or single-key shaft optional
• Mounting fl**ge: 178×178 • Square fl**ge, center distance 141×141 mm, fixing hole diameter 18 mm
• Oil port specifications: Inlet 33×2 standard thread, outlet 14×1.5 standard thread
• Weight: 28.1-33.5 kg (increases with displacement)
Key parameters by model:
1. BM6-195: Rated torque 572 N·m, continuous power 15 kW, continuous speed 776 rpm, weight 28.1 kg
2. BM6-245: Rated torque 720 N·m, continuous power 18 kW, continuous speed 620 rpm, weight 28.6 kg
3. BM6-310: Rated torque 775-910 N·m, continuous power 20 kW, continuous speed 485 rpm, weight 29.2 kg
4. BM6-390: Rated torque 970-1150 N·m, continuous power 22 5. BM6-490: Rated torque 1225-1450 N·m, continuous power 25 kW, continuous speed 310 rpm, weight 30.9 kg
6. BM6-625: Rated torque 1550-1750 N·m, continuous power 28 kW, continuous speed 245 rpm, weight 32.1 kg
7. BM6-800: Rated torque 1690-1950 N·m, continuous power 30 kW, continuous speed 190 rpm, weight 32.5 kg
8. BM6-985: Rated torque 1565-2200 N·m, continuous power 35 kW, continuous speed 155 rpm, weight 33.5 kg
V. Applicable Vehicles and Equipment (Full Scenario Coverage)
Construction Machinery Field
• Excavators: Small tracked excavators (walking and slewing drive), hydraulic systems for steel grabbers
• Loaders: Skid steer loaders, working device drives for small wheel loaders
• Road Machinery: Sweepers, snowplows, road milling machines, pavers
• Special Machinery: Aerial work platforms, car carriers, hydraulic winches, oil pipe wrenches, boom lifts
Agricultural Machinery
• Harvesting Machinery: Combine harvesters, corn harvesters, sugarcane harvesters, special harvesters for potatoes/tomatoes/nuts/grapes, etc.
• Tillage Machinery: Rotary tillers, seeders, ground drilling machines, augers, power heads
• Others: Lawn mowers, sprayers, feed mixers, portable irrigation systems
Industry and Other Fields
• Plastics Machinery: Pre-plasticizing screw drives for injection molding machines, mold adjusting machines
• Mining Machinery: Hydraulic traction transmissions for coal mining machines, small mining equipment
• Shipbuilding and Fisheries: Ship anchor chain lifts, fishing vessel net haulers, net pulling machines
• Material handling: Conveyor drives, winches, forklift attachment drives
• Others: Machine tool spindle and feed mechanism drives, winding machines, textile machines, printing presses
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