QD40E FAST 10JS90A-B Power Takeoff PTO

 FAST 10JS90A-B  Power Takeoff PTO

• Model and Compatibility

• Compatible transmissions: Fast 10JS90 / 10JS90A / 10JS90A-B (small 10-speed) series

• Corresponding PTO model: QD40E (18-tooth single gear); also compatible with QD40D / QD40F and other models on the same platform

• Meshing gear: Engages with the 30-tooth PTO gear on the transmission's countershaft to achieve power output

• Structure and Installation

• Installation position: Bottom or right-side access window of the transmission; square flange mounting hole pattern (the 8 bolt holes in the image are standard layout)

• Core structure: Built-in 18-tooth drive gear that meshes with the countershaft gear of the transmission to transfer power

• Output form: Side flange output, which can be directly connected to hydraulic pumps, generators, and other equipment

• Performance Parameters

• Rated torque: ~450 N·m

• Gear ratio: 0.86 (for direct-drive version, matching the 10JS90A-B direct-drive transmission); 1.11 (for overdrive version)

• Control method: Typically pneumatic, engaged/disengaged via a switch in the cab

• Typical applications: Dump truck hoist pumps, sprinkler truck water pumps, mixer truck hydraulic systems, stage truck power generation, and other special-purpose vehicle equipment power takeoff.

• Operation specifications: The PTO must only be engaged with the transmission in neutral and the vehicle stationary, with the engine running at idle or medium speed. Engaging the PTO while the vehicle is in gear and moving is strictly prohibited.

• Lubrication and maintenance: Shares lubricating oil with the transmission. Regularly change the transmission oil, check gear backlash and seal conditions, to prevent oil leaks and gear damage.

III. Differentiation by Performance and Application Scenarios

1.Speed-increasing type (speed ratio < 1, e.g., QD40A):

Suitable for equipment requiring high-speed output (such as high-speed operating devices driven by hydraulic pumps), commonly used in light special vehicles (e.g., small sprinklers, cleaning vehicles).

2.Speed-reducing type (speed ratio > 1, e.g., QD40K, QD40L, QD40N):

Suitable for heavy-duty equipment requiring high torque output (e.g., concrete mixers, large cranes, dump truck lifting systems), which increases torque by reducing speed.

3.Near-constant speed type (speed ratio ≈ 1, e.g., QD40B):

Balances speed and torque, suitable for scenarios with high requirements for speed stability (e.g., precision hydraulic control systems).

IV. Differences Between Original and Aftermarket Parts

• Original parts (e.g., QD40A/J/K/L/B/N):

Strictly match the size, tooth count, and strength standards of the corresponding gearbox, with high reliability. They usually have formal numbers (e.g., 17JK-G18569, G30468) and guaranteed compatibility.

• Aftermarket parts (16:30 teeth):

As replacement parts, they have different tooth counts from the original, which may lead to dimensional deviations or insufficient strength. It is necessary to test the installation compatibility and transmission stability with the gearbox. They are recommended for non-heavy-duty or temporary replacement scenarios.

In summary, when differentiating QD40 series PTOs, it is necessary to first confirm the matched gearbox model, then judge their performance characteristics based on tooth count and speed ratio, and finally select the appropriate model according to operational requirements (speed/torque) and the nature of original/aftermarket parts.