Hydraulic Steering Unit, Open Centre, Non-Reaction, 1/2" BSP, 50CC
BPB1-50-Y31-P
Product Features:
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Hydraulic Steering Units, Open Centre Non-Reaction – Direct Replacement for Danfoss OSPB ON (150N0039 / 150-0039), (150N0040 / 150-0040), (150N0041 / 150-0041), (150N0042 / 150-0042), (150N0043 / 150-0043)
Standard configuration: ON (Open Centre, Non-Reaction)
- Open Centre: Allows continuous oil flow through the steering unit back to the tank when in the neutral (non-steering) position.
- Non-Reaction: Prevents feedback from the wheels from reaching the steering wheel — the steering wheel stays stationary even if external forces act on the wheels (e.g., hitting a rock or curb).
BPB1 HYDRAULIC CIRCUIT - OPEN CENTRE NON-REACTION
BPB1 DIMENSIONS
BPB1 COMPARISON TABLE
| Displacement | Rated Flow (@100 RPM) | Max Input Pressure | Max. Cont. Pressure in Line T | Power Steering Torque | Max. Manual Steering Torque | Dimensions L | Weight |
|---|---|---|---|---|---|---|---|
| cm3 /rev | L/min | Bar | Bar | N.m | N.m | mm | kg |
| 50 | 5 | 175 | 25 | 1.6 - 2.4 | 130 | 130 | 5.8 |
| 63 | 6 | 132 | 5.9 | ||||
| 80 | 8 | 133 | 6 | ||||
| 100 | 10 | 136 | 6.1 | ||||
| 125 | 12.5 | 139 | 6.2 | ||||
| 160 | 16 | 144 | 6.4 | ||||
| 200 | 20 | 149 | 6.5 | ||||
| 250 | 25 | 155 | 6.7 | ||||
| 280 | 28 | 160 | 7 | ||||
| 315 | 31.5 | 165 | 7.2 | ||||
| 400 | 40 | 175 | 7.4 |
CHARACTERISTICS
Steering units are primarily used in low-speed, off-road vehicles, particularly in the agricultural and construction sectors. They provide smooth, reliable steering performance, enhancing both operator comfort and overall system efficiency. Common applications include construction equipment such as excavators, loaders, and bulldozers, as well as agricultural machinery like tractors, harvesters and sprayers.
- With effective pressure compensation for changes in steering load.
- The steering unit maintains consistent flow and pressure, ensuring reliable steering performance.
- The steering circuit operates independently from other circuits, enhancing overall system efficiency. With high steering sensitivity and quick response, the steering performs well even in cold conditions.
OPEN CENTRE STEERING SYSTEM
In an open centre steering system, oil from the pump returns to the tank when in the neutral position. A fixed displacement pump is recommended for this setup.
BPB1 SERIES STEERING UNITS – CROSS REFERENCE FOR DANFOSS OSPB MODELS
| DANFOSS PART NUMBER | FLOWFIT EQUIVALENT PART NUMBER |
|---|---|
| 150N0039 (OSPB 50) | BPB1-50-Y31-P |
| 150N0040 (OSPB 80) | BPB1-80-Y31-P |
| 150N0041 (OSPB 100) | BPB1-100-Y31-P |
| 150N0042 (OSPB 125) | BPB1-125-Y31-P |
| 150N0043 (OSPB 160) | BPB1-160-Y31-P |
NEED ASSISTANCE?
If you require a different setup, please contact our Sales Department — we’ll be happy to assist. Provide your current hydraulic steering unit part number, and we’ll cross-reference it with our direct equivalent.
General delivery information
Thank you for visiting and shopping at www.flowfitonline.com. Below are the terms and conditions for the Shipping Policy for Harrier Fluid Power Ltd T/A Flowfit.
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United Kingdom delivery rates & estimates
| Service | Price | Terms |
|---|---|---|
| FREE Delivery | FREE | Free UK delivery is available for orders over £99.99+ VAT. Delivered by close of business next working day. |
| Express Delivery | £9.99 + VAT | UK Mainland delivery for orders under £99.99 + VAT. Delivered by close of business next working day. |
| Express 9am | £42.95 + VAT | Delivered by 9am next working day. |
| Express 12pm | £20.95 + VAT | Delivered by 12pm next working day. |
| Channel Islands | ||
| Standard Delivery | £20.95 + VAT | Delivery in 2–3 working days. |
| UK Highlands & Isles | ||
| Order value below £99.99 + VAT | £31.95 + VAT | Delivery in 2–3 working days. |
| Order value over £99.99 + VAT | £28.95 + VAT | Delivery in 2–3 working days. |
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Returns policy
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