SIDE BY SIDE
Both BM6 variants are low speed high torque hydraulic wheel motor designs built on the same orbital-motor architecture by HANDAN HAOSHENG FASTENER CO., LTD. This comparison covers the key decision criteria — operating parameters, mechanical interfaces, maintenance requirements, and supported application profiles — using only the specifications and feature descriptions published for each product. It helps procurement teams and engineers identify which BM6 configuration best matches their system's pressure envelope, displacement need, and installation geometry.
BM6 Hydraulic Wheel Motor (High Torque Orbital Motor) — wheel-drive and mobile traction applications, with published numeric displacement, pressure, torque, speed and fluid-maintenance parameters
BM6 Hydraulic Orbital Motor — industrial drive applications including winches and drilling rigs, with qualitative feature descriptions; numeric parameters not published in confirmed excerpt
Choosing between two BM6-series products from HANDAN HAOSHENG FASTENER CO., LTD. begins with understanding the decision context. Both are low speed high torque hydraulic wheel motor designs built on an orbital (gerotor) principle, and both carry the BM6 model family designation. However, they are presented under different product listings — one focused on wheel-drive and mobile applications, the other on broader industrial drive systems such as winches and drilling rigs — and each listing provides a distinct published parameter set. The comparison below uses only confirmed published data; values absent from a source are marked as not published.
| BM6 Hydraulic Wheel Motor | BM6 Hydraulic Orbital Motor | |
|---|---|---|
| Primary listed applications | Heavy-duty mobile machinery, traction drives, direct wheel drive | Winches, drilling rigs, hydraulic drive systems, industrial applications |
| Product page | View product | View product |
The BM6 Hydraulic Wheel Motor listing publishes a numerical displacement and performance range. The BM6 Hydraulic Orbital Motor listing presents its parameters in qualitative terms without publishing discrete numerical ranges in its excerpt.
| Parameter | Value |
|---|---|
| Displacement range | 195 – 985 mVr |
| Max continuous flow | 150 LPM |
| Max intermittent flow | 170 – 225 LPM |
| Max continuous speed | 155 – 776 RPM |
| Max intermittent speed | 230 – 865 RPM |
| Max continuous pressure | 12 – 20.5 MPa |
| Max intermittent pressure | 14 – 31 MPa |
| Max continuous torque | 1,137 – 15,650 Nm |
| Max intermittent torque | 1,877 – 18,770 Nm |
Source: published BM6 Wheel Motor product page.
| Parameter | Specified Value |
|---|---|
| Normal oil temperature | 20 °C – 60 °C |
| Max system temperature | 90 °C (max 1 hour) |
| Filtration accuracy | 10 – 30 microns |
| Pollution level | ≤ 19/16 |
| Kinematic viscosity | 42 – 74 mm²/s @ 40 °C |
| Recommended load range | 1/3 to 2/3 of rated |
| Leakage port pressure | Max 10 MPa (below 200 RPM) |
Source: published BM6 Wheel Motor product page.
The Orbital Motor listing describes its operating characteristics in feature terms rather than discrete numeric ranges:
Discrete numerical values for displacement, pressure, flow, torque or speed are not published in this listing's confirmed excerpt. Procurement teams requiring those values should request them directly or refer to the Wheel Motor listing data above.
Both products share the same published interface flexibility, as each is described as offering a wide variety of connection types.
| Interface criterion | BM6 Hydraulic Wheel Motor | BM6 Hydraulic Orbital Motor |
|---|---|---|
| Flange options | Wide variety of types | Multiple connection types |
| Output shaft options | Wide variety of types | Customizable output shafts |
| Oil port options | Wide variety of types | Various oil port sizes |
| Circuit modes | Series and parallel supported | Not specified in published excerpt |
| Series compatibility | BM1 through BM10 / BMM | Not specified in published excerpt |
Key difference: The Wheel Motor listing explicitly states compatibility with the full BM1–BM10 / BMM series range and mentions support for both series and parallel hydraulic circuit modes. The Orbital Motor listing does not specify circuit mode support in its published excerpt.
Both products use the same stated bearing architecture.
| Criterion | BM6 Hydraulic Wheel Motor | BM6 Hydraulic Orbital Motor |
|---|---|---|
| Bearing type | Double-rolling (double tapered roller) | Double-rolling bearing |
| Radial load capacity | Enhanced / higher than standard | High load capacity |
| Axial load capacity | High axial & radial loads stated | Not separately enumerated |
Both listings confirm that the double-rolling bearing design is specifically intended to accommodate significant radial loads, protecting shaft integrity during continuous operation. The Wheel Motor listing additionally references high axial load tolerance explicitly.
| Criterion | BM6 Hydraulic Wheel Motor | BM6 Hydraulic Orbital Motor |
|---|---|---|
| Shaft seal design | High-pressure advanced shaft seal | High-pressure shaft seal |
| Intermittent peak pressure | Up to 31 MPa (from numeric table) | Not published numerically |
| Leak prevention | Stated extended service life | Stated no leakage under pressure |
Both products describe their shaft seals as engineered for higher operating pressures. The Wheel Motor provides the pressure envelope numerically (up to 31 MPa intermittent); the Orbital Motor confirms high-pressure performance in qualitative terms.
| Criterion | BM6 Hydraulic Wheel Motor | BM6 Hydraulic Orbital Motor |
|---|---|---|
| Wear compensation | Automatic, integrated | Automatic, integrated (oil distribution mechanism) |
| Function described | Maintains internal clearances and efficiency | Automatically compensates for wear to maintain efficiency |
| Effect on maintenance | Reduced maintenance frequency stated | Reduced maintenance frequency stated |
Both products publish an automatic wear compensation feature. The Orbital Motor listing further specifies that the mechanism is part of the oil distribution system, while the Wheel Motor listing describes it as an independent integrated mechanism. Both lead to the same stated outcome: extended service life and reduced maintenance intervals versus standard orbital motors.
Both products are built around the same end-face distribution principle specifically to address low-speed stability — a defining characteristic of a low speed high torque hydraulic wheel motor.
| Criterion | BM6 Hydraulic Wheel Motor | BM6 Hydraulic Orbital Motor |
|---|---|---|
| Low-speed design feature | Advanced end-face distribution | Advanced end-face distribution |
| Described outcome | Stable, smooth rotation without jerkiness at low RPM | Jitter-free, smooth rotation during low-speed operations |
| Stability basis | Balanced hydraulic fluid flow, pulsation elimination | Balanced hydraulic fluid flow, pulsation elimination |
Published descriptions for both products attribute low-speed stability to the same end-face distribution mechanism. Neither listing quantifies a minimum stable RPM in its published excerpt beyond the speed ranges provided for the Wheel Motor.
The Wheel Motor listing publishes specific fluid maintenance parameters (temperature limits, filtration accuracy, viscosity range, and pollution level). The Orbital Motor listing does not publish equivalent numerical maintenance parameters in its confirmed excerpt.
| Maintenance criterion | BM6 Hydraulic Wheel Motor | BM6 Hydraulic Orbital Motor |
|---|---|---|
| Oil temperature limit | 20 °C – 60 °C normal; 90 °C max (1 hr) | Not published numerically |
| Filtration accuracy | 10 – 30 microns | Not published numerically |
| Fluid pollution level | ≤ 19/16 | Not published numerically |
| Kinematic viscosity | 42 – 74 mm²/s @ 40 °C | Not published numerically |
| Recommended load | 1/3 to 2/3 of rated | Not published numerically |
| Leakage port pressure | Max 10 MPa (below 200 RPM) | Not published numerically |
| Maintenance intervals | Reduced vs. standard (stated) | Reduced vs. standard (stated) |
For maintenance planning, the Wheel Motor product page provides the explicit fluid and operating condition limits needed to set service intervals. Teams working with the Orbital Motor configuration should request the equivalent parameter sheet from HANDAN HAOSHENG FASTENER CO., LTD.
| Application type | BM6 Hydraulic Wheel Motor | BM6 Hydraulic Orbital Motor |
|---|---|---|
| Mobile/wheel-drive machinery | Primary stated use | Not emphasized in published excerpt |
| Construction machinery | Listed in company's factory scope | Implied by industrial drive scope |
| Winches | Not emphasized | Explicitly listed |
| Drilling rigs | Not emphasized | Explicitly listed |
| Traction drives | Explicitly listed | Not specified |
| Industrial hydraulic drives | Covered under mobile scope | Primary stated scope |
| Criterion | BM6 Hydraulic Wheel Motor | BM6 Hydraulic Orbital Motor |
|---|---|---|
| Numeric displacement data published | Yes (195–985 mVr) | No |
| Numeric pressure data published | Yes (up to 31 MPa intermittent) | No |
| Numeric torque data published | Yes (up to 18,770 Nm intermittent) | No |
| Fluid maintenance specs published | Yes (full set) | No |
| Series/parallel circuit modes stated | Yes | |
| BM-series compatibility stated | BM1–BM10 / BMM | |
| Double-rolling bearing | Yes | Yes |
| Automatic wear compensation | Yes | Yes |
| End-face distribution (low-speed) | Yes | Yes |
| High-pressure shaft seal | Yes | Yes |
| Customizable shaft/flange/port | Yes | Yes |
| Wheel/traction drive emphasis | Yes | Not emphasized |
| Winch/drilling rig emphasis | Not emphasized | Yes |
Buyers selecting a low speed high torque hydraulic wheel motor for mobile traction or direct wheel-drive applications will find the BM6 Hydraulic Wheel Motor product page provides the complete numerical parameter set — displacement range, pressure limits, torque envelope, fluid temperature limits and filtration requirements — needed to match the motor to a system specification.
Buyers integrating a BM6 motor into stationary industrial circuits such as winches or drilling rigs will find the BM6 Hydraulic Orbital Motor listing better aligns with those stated application profiles, though its published excerpt does not include discrete numerical operating limits. In that case, requesting a detailed datasheet from HANDAN HAOSHENG FASTENER CO., LTD. is recommended before finalizing a selection.
Both products share the same core design advantages — double-rolling bearing, automatic wear compensation, advanced end-face distribution and high-pressure shaft sealing — so the decision between them is primarily driven by application type, the need for a published numeric parameter set at the quoting stage, and specific interface requirements such as series/parallel circuit compatibility.
For more information on the BM6 Hydraulic Wheel Motor, visit the BM6 Hydraulic Wheel Motor product page. For the orbital motor configuration suited to industrial drive systems, see the BM6 Hydraulic Orbital Motor page.
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