Forklift Steering Axle Assembly — Complete Rear Axle for Heli 1-5 Ton Forklifts

This steering axle assembly is a complete, bolt-in rear axle unit designed for Heli CPCD10 through CPCD50 series 1-5 ton counterbalance forklifts. The assembly includes the forged steel axle beam, the double-acting hydraulic steering cylinder, both tie rods with greasable ball joints, the kingpin and thrust bearing sets, and both steering knuckles with pre-installed wheel hub bearings — all factory-assembled and aligned to Heli OEM specifications. The axle beam is a forged I-beam design with induction-hardened kingpin bores (HRC 50-55) and a central pivot bearing housing that accepts a replaceable bronze bushing. The steering cylinder is a trunnion-mounted design where the cylinder body pivots on two mounting pins pressed into the axle beam — this allows the cylinder to self-align as the axle beam oscillates on its central pivot, reducing rod seal side-loading by up to of what a rigidly-mounted cylinder would experience. The toe-in is factory-set to Heli specification of 0-2mm measured at the wheel rim flange, eliminating the need for on-site alignment after installation.

Steering axle assembly replacement is the most efficient repair approach when multiple axle components have reached their wear limits simultaneously — a scenario common in forklifts with 8,000+ operating hours. The kingpin-to-axle beam interference fit of 0.02-0.04mm is the first critical wear point to fail: once the bore opens beyond 0.06mm, the kingpin begins to work loose and the resulting oval bore wear accelerates rapidly, producing 15-25 degrees of steering wheel free play that cannot be corrected without replacing the axle beam. The central pivot bushing is the second critical wear point — the bushing-to-pin clearance specification is 0.05-0.12mm new, and replacement is required when clearance reaches 0.20mm. A worn pivot bushing allows the entire axle beam to shift laterally during steering transitions, producing a characteristic “rear-end wander” feeling where the forklift requires constant small steering corrections to maintain a straight line. During installation, the axle pivot pin must be torqued to Heli specification of 260-300 N·m and the steering cylinder hydraulic lines must be bled by cycling the steering lock-to-lock 5-6 times with the engine running until no air bubbles are visible in the hydraulic tank sight glass. Common failure symptoms: excessive steering wheel free play (worn kingpin bores), rear-end wander during straight travel (worn pivot bushing), and a rhythmic thumping from the rear axle (worn wheel bearings due to bent axle beam affecting bearing alignment).

This steering axle assembly fits Heli CPCD10 through CPCD50 series 1-5 ton forklifts. Verify your forklift model and the chassis mounting width before ordering — Heli uses different axle beam widths for different tonnage classes. For related steering axle components including individual kingpins, bearings, and tie rods, visit our Forklift Steering Axle section.

Technical Specifications

• Assembly Type: Complete Rear Steering Axle (Non-Driven)
• Beam Design: Forged I-Beam, Induction-Hardened Kingpin Bores
• Cylinder Mount: Trunnion-Mounted, Self-Aligning
• Kingpin Fit: 0.02-0.04mm Interference (Axle Beam Bore)
• Pivot Pin Torque: 260-300 N·m
• Application: Heli CPCD10-CPCD50 (1-5T)

Compatible Forklift Models

Each axle assembly is factory-aligned, pressure-tested, and packed in a reinforced steel crate. Ships within 2-3 business days. 12-month warranty. Browse our Forklift Steering Axle catalog.