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QH50B 14/26
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Shanghai, China
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T/T , Paypal , Union
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Carton
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QH50B Power Takeoff PTO FAST 7JS 8JS 9JS 14/26
Model: QH50B (Type B of the QH50 series)Adaptation: Suitable for Fast 7-speed, 8-speed and partial 9-speed countershaft transmissions (e.g., 8JS series)Installation: Rear-mounted on the transmission, power taken from the auxiliary countershaftApplication: Drives hydraulic pumps for special vehicles such as dump trucks, sanitation trucks, crane trucks and cement tank trucks
2. Main Technical Parameters (QH50B)
3. Structural Features
4. Appearance Reference (QH50B)
5. Operation Guidelines
Air pressure ≥ 0.7 MPa
Transmission auxiliary gearbox shifted to low gear range
Main gearbox in neutral gear (park mode) or low gear (driving mode)
6. Common Replacement & Related Models
QH50A: Different gear ratio, compatible with 9/12-speed transmissions
QH50C/D: Different specifications of output flange and spline
QH70: Higher rated torque (700 N·m), applicable for high-horsepower vehicles
QH50A / QH50B / QH50C / QH50D PTO
| Model | Gear Teeth / Ratio | Rated Torque | Output Specification | Compatible Fast Gearbox | Core Difference |
|---|---|---|---|---|---|
| QH50A | Lower tooth count, higher gear ratio | 500 N·m | Standard rear spline / flange | 9-speed, 12-speed heavy-duty countershaft gearbox | Higher gear ratio, suitable for high-torque multi-speed gearbox; not for 7/8-speed |
| QH50B | 14:26 standard ratio | 500 N·m | 8-spline + standard flange universal | 7-speed, 8JS series, partial 9-speed | General model, widely used for sanitation, dump truck and crane truck |
| QH50C | Same ratio as QH50B | 500 N·m | Extended spline / larger flange outer diameter | Universal for 7/8/9-speed | Only output mounting dimension changed, same gear ratio |
| QH50D | Same ratio as QH50B | 500 N·m | Different spline teeth / mounting hole position | Universal for 7/8/9-speed | Fits special oil pump interface and modified mounting holes |
Brief Summary
Gear Ratio: Only QH50A has different ratio; B/C/D share the same ratio.
Torque: All models rated 500 N·m.
Compatibility:
QH50A: Mainly for 9/12-speed heavy truck gearboxes
QH50B/C/D: Mainly for 7-speed, 8JS light & medium special vehicle gearboxes
C/D only differ in external interface, same internal gear ratio and structure as B; interchangeable by replacing output end.
