PY270Q grader drive axle

The rear axle of the PY270Q integrated swing grader is a new model in Shandong Lutong Heavy Industry Machinery's line of grader drive axles, specifically designed for motor graders in the 240–270 hp class.

In the design of a motor grader, the rear axle bears the most critical load: it transmits the engine's full torque to the drive wheels, absorbs impact loads during grading and ripping, supports a significant portion of the machine's operating weight, and must maintain stability and reliability over thousands of hours of continuous operation. The PY270Q grader drive axle is built precisely for these requirements—a one-piece cast housing, a five-pinion planetary gear set, a pivoting structure on a slewing ring, and hydraulic disc brakes provide the 240–270 hp motor grader with the necessary load capacity, durability, and ease of maintenance under the harshest conditions.

As the rear axle of an integrated motor grader, the PY270Q is mounted directly in the rear drive position of the machine and provides reliable traction and blade support during road construction, highway maintenance, quarry road upkeep, and large-scale earthmoving operations. Each axle undergoes testing on its own test bench in the company's laboratory before leaving the factory.

Design concept

The development of the PY270Q grader drive axle is built on one key principle: the rear axle of a large motor grader must be robust where it is loaded and simple where it is serviced. Over-engineering increases mass and cost, while under-engineering shortens service life. Therefore, the engineering team focuses on three tasks:

• Structural integrity — the one-piece housing absorbs impact loads without deformation or cracks;

• Durability — the even distribution of load on the planetary gear teeth maximizes service life;

• Service convenience — components are easy to source, disassemble, and replace, reducing downtime and lowering total cost of ownership.

The rear axle of the PY270Q integrated turning grader is designed considering the input torque and operating conditions of 240–270 hp motor graders, and meets the same engineering standards we apply when supplying leading axles for graders to OEMs such as LiuGong, Shantui, Lovol, Doosan, UMG, and Amkodor.

Key technical advantages

4.1 One-piece axle housing — high load capacity, simplified design

The PY270Q uses a one-piece cast housing. Eliminating unnecessary welds and bolted connections provides higher rigidity and load capacity at the same weight and eliminates potential weak points. Under repeated impact loads from grading, ripping, and heavy earthmoving, the housing maintains precise transmission alignment and dimensional stability, preventing premature wear from misalignment.

4.2 Universal final drive — removable independent assembly

The final drive is built on a proven standard design and can be removed and replaced as a single unit. This is a real advantage for both OEM assembly lines and end users: the unit is replaced without major disassembly, and repairs take less time. For customers in remote regions, spare parts are easily sourced locally, drastically reducing downtime.

4.3 Five-pinion planetary gear — rational load distribution

The drive axle of the PY270Q grader is equipped with a new five-planet planetary gear set. Compared with traditional three- and four-planet configurations, the five-planet design distributes torque across more teeth, reducing the load on each tooth. The result is measurable: lower tooth stress, lower operating temperature, quieter gear operation, and a noticeably longer gearbox service life under continuous operation.

4. 4The slewing bearing features a rotating design, long-term sealing, and stable, high load-bearing capacity.

The rear axle is equipped with a pivot bearing, ensuring the sealing of the raceway remains stable over thousands of operating hours. Contaminants do not enter, and the rated load capacity is maintained even in the pivoting state. This design makes the grader more stable and controllable on slopes and horizontal inclined planes, and directly enhances the reliability of the entire drive system.

4.5 Overall, independent wheel edges simplify assembly and maintenance.

The wheels on the left and right sides are independent assemblies that can be repaired separately. Disassembly and overhaul on one side do not affect the operation of the other side at all, which not only reduces maintenance time but also simplifies assembly on the production line for equipment manufacturers. The modular design also simplifies spare parts management for equipment manufacturers and fleets.

4.6 Hydraulic clamp disc brake, fast, reliable and easy to maintain braking

The PY270Q drive axle is equipped with a hydraulic clamp disc brake, which provides a fast braking response and ensures reliable braking during operation. The open-type disc caliper design facilitates inspection, part replacement is simple, and maintenance costs for the entire machine are reduced over its service life. The performance and ease of maintenance of this braking system are especially valued in mines and heavy earthmoving operations.

4.7 Designed for motor graders of 240–270 hp

The rear axle of the PY270Q integrated motor grader is specifically designed for the 240–270 hp class—machines with the largest blades and the toughest working conditions. The axle is rated for continuous operation at the full input torque of this class and offers a reliable solution for both new machine production and aftermarket replacement.

Main technical parameters

Full technical specifications are provided together with the bench test report. For an accurate selection, please send us the model of your motor grader and the axle assembly drawing — we will confirm the parameters.

Areas of application

As the rear axle of a 240-270 horsepower grader, the PY270Q grader drive axle can be used in a wide range of application scenarios:

• Road construction and maintenance — precise grading, shoulder profiling, and surface finishing in continuous operation;

• Mining operations — maintenance of quarry roads and heavy earthmoving under high impact loads and intense wear;

• Large-scale earthworks — site leveling, land preparation, and movement of large volumes of material;

• Infrastructure and airfield projects — precise grading requiring exceptional axle stability and controllability.

The axle is supplied both for OEM fitment on new machines and for aftermarket replacement on 240–270 hp motor graders, covering both production programs and the service market.

Quality assurance and verification of test results

Quality control is the top priority of the leading grader axle project. Shandong Lutong has established its own leading axle production laboratory, and every axle can be tested on a test bench before leaving the factory. The bench test report covers the characteristics of bearings, seals, gear durability, and braking performance of the axle housing, providing customers with a verifiable and assessable engineering basis.

The PY270Q drive axle meets the same quality management requirements as the entire series of grader axles. This series of products has been verified for suitability in large-scale practical use: a high-power grader axle with 260-270 hp has been shipped to Belarus in batches and is continuously tested in large-scale mining operations. We promise that the quality of each batch of products will be stable, as confirmed by a stable production system and complete test records.

Why choose Shandong Lutong

Shandong Lutong Heavy Industry Machinery Co., Ltd. has specialized in the design and production of drive axles since 1993, with a production base of 200,000 m² and a staff of over 400 employees. We are a professional OEM manufacturer of drive axles with independent development, precision manufacturing, and stable series supply.

OEM supply experience. Our drive axles are widely supplied to well-known manufacturers, including LiuGong, Shantui, Lovol, Doosan, UMG, and Amkodor, and are used in loaders, excavators, and motor graders. Grader axles are one of our key product lines, built on decades of experience in matching specific OEM manufacturers.

Global service. We work with the markets of Russia, Belarus, India, Turkey, and Brazil under a full-cycle collaboration model: design expertise tailored to your motor grader, prototype development, stable serial deliveries, and shipments synchronized with your production schedule.

Engineering support. Each project is accompanied by R&D and laboratory teams. From the initial drawing review to serial production, we operate as an extension of your design department, providing documented test evidence and prompt technical support.

OEM collaboration process

• Design review — provide the grader model and axle assembly drawing; our engineers will confirm compliance and connection requirements;

• Sample development — samples are manufactured and tested on our test bench;

• Customer verification — samples are sent for installation and field testing;

• Serial delivery — after design approval, stable serial production is launched with consistent quality and timely shipment;

• Ongoing service — bench test protocols, spare parts supply, and technical support throughout the entire lifecycle.

Frequently asked questions

Question 1: For which class of motor graders is the PY270Q drive axle intended? The PY270Q axle is designed for motor graders of 240–270 hp and is supplied as the rear axle of an integrated turning grader.

Question 2: Is this a front or rear axle? This is a rear drive axle. The pivoting oscillating design is intended for the rear position of a motor grader—it absorbs the load from the blade and provides traction.

Question 3: Can the mounting flange, gear ratio, or brake configuration be changed? Yes. As an OEM supplier, we regularly adapt flanges, gear ratios, and brake assemblies to the customer's motor grader design. Please provide an assembly drawing.

Question 4: What test documentation can you provide? We provide bench test reports covering gear ratio, input torque, rated load, and braking efficiency.

Question 5: What is the typical lead time? The lead time depends on the configuration and order volume. For OEM supply, we ensure stability across production batches—let us know your volumes, and we will confirm the production schedule.

Contact us

To assess whether the PY270Q grader front axle matches your motor grader, please provide the machine model and assembly drawing. Our engineering team will confirm the technical parameters, arrange sample development, and prepare a delivery schedule for your production.