Isuzu Universal Joint Cross Shaft – 20Cr Steel, 29mm × 76mm, Heavy-Duty Replacement

Factory Direct | 20Cr alloy steel | 29mm diameter × 76mm length | Carburized & hardened 58-64HRC | Forged construction | Precision ground | Isuzu truck compatible | OEM custom

The Apexcoupling Isuzu Universal Joint Cross Shaft is a high-strength replacement component designed for Isuzu trucks, commercial vehicles, and heavy-duty industrial drive systems. Manufactured from premium 20Cr alloy steel with carburizing and hardening heat treatment, this cross shaft delivers exceptional wear resistance, high surface hardness (58-64HRC), and a tough, impact-resistant core (33-48HRC). The precision-ground journal surfaces ensure smooth bearing fit and extended service life. With cold-forged construction, case-hardened finish, and precision grinding, this 29mm × 76mm cross shaft meets or exceeds OEM specifications for Isuzu and compatible applications. The built-in grease fitting allows for easy maintenance and extended service life.

✅ 20Cr alloy steel – carburized & hardened 58-64HRC surface hardness. 29mm diameter × 76mm length – direct Isuzu replacement. Forged & precision-ground – superior strength and accuracy. Greaseable design – 360° lubricant distribution to all bearing surfaces. Heavy-duty construction – built for trucks and industrial applications. OEM custom sizes available.

Key Technical Specifications

Isuzu 29×76 Cross Shaft – Detailed Dimensions

📐 All dimensions are in millimeters (mm). Custom dimensions and specifications available upon request.

Product Structure

1. Forged Cross Shaft Body – Hot-forged from 20Cr alloy steel for optimal grain structure and material density.

2. Four Precision-Ground Journals – Precision-ground bearing surfaces (29mm diameter, 76mm length) for accurate bearing fit and extended service life. Journal tolerance h6 or g6, surface roughness ≤Ra0.4.

3. Carburized & Hardened Surface – Surface hardness 58-64HRC provides exceptional wear resistance; core hardness 33-48HRC ensures toughness and impact resistance.

4. Grease Fitting (Zerk Fitting) – Allows 360° lubricant distribution to all bearing surfaces for easy maintenance.

5. Needle Roller Bearings – Precision-ground bearings (GCr15) for high load capacity and smooth rotation.

6. 100% Magnetic Particle Inspection – Ensures no cracks or defects.

💡 How it works: The universal joint cross shaft connects the yokes of a universal joint, transmitting torque between the transmission and drive axle. As the driveline rotates, the cross shaft allows angular misalignment compensation while the needle roller bearings reduce friction. The carburized and hardened surface provides wear resistance, while the tough core withstands shock loads. The grease fitting allows for regular lubrication, extending service life. This design is widely used in automobile transmission systems, allowing adjacent shafts to operate at angles of 15-20°.

Material – 20Cr Alloy Steel

The Isuzu cross shaft is manufactured from 20Cr low-carbon alloy steel with carburizing and hardening heat treatment:

💡 20Cr offers an optimal combination of surface hardness (58-64HRC) for wear resistance and core toughness (33-48HRC) for impact resistance, making it the ideal material for heavy-duty universal joint cross shafts.

Applications

• Isuzu Trucks – NPR, NQR, FSR, and compatible models

• Commercial Vehicles – Light to medium-duty trucks and vans

• Agricultural Machinery – Tractor PTO drive shafts, farm equipment

• Industrial Equipment – Conveyor systems, material handling, general power transmission

• Construction Machinery – Heavy equipment drives

• Automotive Aftermarket – Replacement U-joints for Japanese vehicles

• Drive Shaft Assemblies – Truck and industrial drive shaft repairs

Why Choose Apex Coupling for Isuzu Cross Shafts?

FAQ

Q: What is a universal joint cross shaft?
A: A universal joint cross shaft (also called a U-joint cross, spider, or cross axis) is the central component of a universal joint that connects the yokes. It transmits torque between two shafts that are not perfectly aligned, allowing angular misalignment while maintaining smooth rotation.

Q: What is the specification of this Isuzu cross shaft?
A: This Isuzu cross shaft measures 29mm diameter × 76mm length and is manufactured from 20Cr alloy steel with carburized and hardened surface (58-64HRC).

Q: What material is used?
A: The cross shaft is manufactured from 20Cr low-carbon alloy steel – a premium material for universal joint cross shafts. The surface is carburized and hardened to 58-64HRC.

Q: What is the hardness of the cross shaft?
A: The surface hardness reaches 58-64HRC (carburized layer), while the core maintains 33-48HRC for toughness and impact resistance.

Q: What vehicles is this cross shaft compatible with?
A: This 29×76 cross shaft is compatible with Isuzu, Toyota, Daihatsu, Honda, Nissan, and other compatible applications.

Q: Does the cross shaft have a grease fitting?
A: Yes. The cross shaft incorporates a grease fitting that allows 360° lubricant distribution to all bearing surfaces for easy maintenance.

Q: Is the cross shaft forged?
A: Yes. The universal joint cross shaft is cold-forged, case-hardened, and precision-ground for superior strength and accuracy.

Q: What is the manufacturing standard?
A: The cross shaft is manufactured according to GB3077-82 (Structural Steel) and GB1801-79 (Tolerances) standards.

Q: What are the common applications?
A: Isuzu trucks, commercial vehicles, agricultural machinery, industrial equipment, and automotive aftermarket applications.

Q: Can I get a custom cross shaft?
A: Yes. We offer OEM customization – custom sizes, materials, and finishes available.

Q: What is the warranty?
A: 1 Year – quality assured.

Request a Quote

Send us your required specifications (Isuzu 29×76 standard or custom), quantity, and any customization requirements. Our engineers will provide a quotation within 24 hours.