30HB Clutch Release Bearing Housing — Heli/Hyundai 2-3.5T Forklift Transmission

This is the 30HB clutch release bearing housing — the cast iron carrier bracket that slides onto the transmission input shaft sleeve and holds the release bearing in precise alignment with the clutch diaphragm spring fingers. This is not the bearing itself; it is the structural housing that the bearing presses into. The 30HB designation identifies this as the housing for Heli and Hyundai forklift transmissions using the 30HB-series gearbox (standard on CPCD25-CPCD35 and Hyundai 25-35D models). A cracked or worn release bearing housing causes the same symptoms as a failed bearing — squealing, incomplete disengagement, pedal vibration — but the root cause is different: the bearing is cocked at an angle because the housing bore is worn oval, or the housing flange has cracked at the mounting bolt holes from repeated clutch actuation force. Replacing only the bearing into a worn housing guarantees the new bearing will fail within days because it is running misaligned from the first engagement.

The most common failure mode specific to the 30HB housing — and what separates it from other transmission-mounted release bearing carriers — is bore wear at the sliding interface with the transmission input shaft sleeve. The housing must slide freely forward and backward on the sleeve as the clutch pedal is depressed and released. When the housing bore wears beyond tolerance (typically 0.15mm clearance or more), it rocks on the sleeve instead of sliding straight. This angular movement transfers uneven pressure to the release bearing face, causing it to contact the diaphragm fingers at an angle. The first sign is a high-pitched chirp when the pedal is first depressed, followed by increasing pedal vibration as the angular wear accelerates. By the time the noise becomes constant, the housing bore is scrap. The 30HB housing is cast from ductile iron with a precision-bored sliding surface and an integrated grease fitting port for periodic lubrication of the sleeve interface — a feature omitted on cheaper aftermarket housings that leads to accelerated bore wear from dry sliding friction.

Direct fit for Heli CPCD25-CPCD35 (30HB transmission) and Hyundai 25D-35D series forklifts. Also compatible with Hangcha models using the 30HB gearbox. When replacing the housing, always replace the release bearing simultaneously (the old bearing will have worn into the old housing’s alignment, and pressing it into a new housing transfers the existing wear pattern). Apply a thin coat of high-temperature grease to the transmission input shaft sleeve before sliding the new housing on. Verify that the housing slides freely without binding through its full travel before connecting the release fork. For matching release bearings, browse our clutch release bearing category. Reference OEM specs at Heli official website.

Technical Specifications

• SKU: 30HB-RBH
• Key Differentiator: 30HB-Specific Cast Iron Housing — NOT a bearing. This is the carrier bracket for 30HB transmissions. Incompatible with non-30HB gearbox types.
• Material: Ductile Cast Iron, Precision-Bored Sliding Surface, Integrated Grease Fitting
• Fitment: Heli 30HB Transmission (CPCD25-CPCD35), Hyundai 25D-35D
• ⚠ Must Also Replace: Release Bearing (Do NOT reuse old bearing in new housing)
• Warranty: 12 Months

Compatible Forklift Models

Kingstream 30HB housings are individually oil-wrapped and packed in rigid cartons. Each unit is inspected for bore diameter, sliding surface finish, and flange flatness. 12-month warranty. Contact us for fitment confirmation or bulk pricing.