41-Gear 68×125×2.7mm Clutch Disc — Precision-Dimensioned Friction Plate for 2-3 Ton Forklifts

This clutch disc is identified by its dimensional triplet — 68mm inner bore × 125mm outer diameter × 2.7mm thickness with 41 gear teeth — a wet-type friction plate for the internal clutch packs in 2-3 ton powershift forklift transmissions. The 41-tooth internal spline count is the primary specification that distinguishes this disc from other plates in the same outer diameter range: a 37-tooth or 38-tooth plate will not slide onto a 41-tooth shaft hub because the spline pitch circle diameter and involute profile are different. The compact 68mm bore and 125mm OD identify this as a plate for the smaller clutch pack assemblies used in light-to-medium-duty powershift transmissions, where the reduced friction surface area is compensated by higher hydraulic apply pressure and a denser friction material compound than larger-diameter plates. The 2.7mm thickness is a non-negotiable specification — a 2.5mm or 3.0mm plate will alter the clutch pack stack height clearance and cause either incomplete disengagement (too thick, pack drags) or insufficient engagement (too thin, piston runs out of stroke).

The most overlooked diagnostic point with this specific plate is that the 2.7mm thickness tolerance is ±0.05mm, and after even 2,000 hours of service, the friction material wears 0.1-0.15mm off each face. Multiply that by the number of friction plates in a clutch pack (typically 5-7 plates), and the total stack clearance increases by 1.0-2.0mm — which is the full usable stroke of the hydraulic apply piston. This means a transmission that “shifts fine” at 2,000 hours can begin slipping at 2,500 hours not because the plates have suddenly failed, but because the cumulative wear has consumed the piston’s clearance margin. The correct diagnostic procedure is to measure individual plate thickness with a micrometer, calculate the total stack height, and compare against the transmission service manual specification — not to visually inspect the plates and guess. A plate that looks “still has material on it” can be 0.1mm undersize and yet be the difference between a transmission that holds and one that slips.

Compatible with Heli CPCD20-CPCD30, Hangcha CPCD20-CPCD30, TCM FD20-FD30, and Toyota 7FD20-7FD30 2-3 ton powershift transmissions using 41-tooth, 125mm OD, 2.7mm friction plates. Always count the spline teeth on your existing plate, measure the OD and thickness with a micrometer, and replace as a complete set. Measure steel separator plates for flatness and thickness at the same time. Flush transmission, replace filter, fill with correct ATF. Browse our transmission parts category. Reference OEM at Heli official website.

Technical Specifications

• SKU: DISC-41T-68-125
• Key Differentiator: 41-tooth spline × 68mm bore × 125mm OD × 2.7mm thickness. Verify all four dimensions before ordering — 37T, 38T, and 41T plates in the same OD range are not interchangeable.
• Internal Splines: 41 Teeth
• Dimensions: 68mm ID × 125mm OD × 2.7mm Thickness (±0.05mm)
• Type: Wet Clutch Friction Plate — Powershift Transmission
• Application: 2-3 Ton Powershift Forklifts — Heli, TCM, Toyota, Hangcha
• Warranty: 12 Months

Compatible Forklift Models

Kingstream 41T friction plates are individually micrometer-checked, oil-paper wrapped, packed in rigid cartons. QC: tooth count, ID/OD, thickness, material bond. 12-month warranty. Contact us for fitment verification or fleet pricing.