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Optimal torque transfer and smooth clutch operation – The OEM KTH-72042 Friction Plate is engineered to provide consistent friction performance, heat resistance, and wear durability for heavy‑duty clutch systems on SINOTRUK HOWO, SHACMAN, and other commercial vehicles. It ensures positive engagement and prevents slippage under high torque loads.
Manufactured from premium non‑asbestos organic (NAO) compound with high‑density woven reinforcement, this plate offers a stable coefficient of friction across a wide temperature range. For guaranteed compatibility and lasting clutch life, always choose genuine Sinotruk Homan parts.
The KTH-72042 Friction Plate features a precision‑molded facing with optimal groove pattern for heat dissipation and debris evacuation. It meets or exceeds OEM specifications for clutch disc assemblies, providing smooth take‑offs and extended service life.
The KTH-72042 Friction Plate is manufactured using a high‑energy mixing process that uniformly distributes friction‑modifying particles throughout the resin matrix. This results in a coefficient of friction (µ) of 0.38‑0.42, ideal for heavy‑duty clutch applications where smooth engagement and high torque capacity are required.
Compared to standard friction plates, this component offers superior heat fade resistance, maintaining torque transmission even after repeated starts on steep grades. The woven reinforcement adds mechanical strength, preventing delamination under shock loads. The plate is also resistant to oil and grease contamination, making it suitable for sealed clutch housings.
Fleet operators using the KTH-72042 report a 40% increase in clutch life compared to low‑cost alternatives, with fewer instances of clutch chatter or judder. The plate’s predictable friction characteristics also improve shifting smoothness, reducing driver fatigue.
Withstands peak temperatures of 400°C without significant μ drop. Maintains torque capacity even under heavy load and repeated starts.
Dense phenolic resin and aramid fiber reinforcement. Achieves 300,000+ km in normal highway service.
Coefficient of friction 0.38‑0.42 with minimal variation from -30°C to +250°C. Eliminates chatter and grab.
| OEM Number | KTH-72042 |
| Product Name | Friction Plate (Clutch Driven Plate Facing) |
| Brand | SINOTRUK Homan |
| Material | Non‑asbestos organic (NAO) with aramid fiber reinforcement |
| Friction Coefficient (μ) | 0.38 – 0.42 (average, ISO 26867) |
| Max Continuous Operating Temp | 250°C (482°F) |
| Peak Intermittent Temp | 400°C (752°F) |
| Thickness (nominal) | 3.5 mm ±0.2 mm |
| Outer Diameter | 380 mm (application specific – confirm fitment) |
| Groove Pattern | Radial waves (6 segments) for dust/dirt evacuation |
| Shear Strength (min) | 15 N/cm² (exceeds OEM specification) |
| Density | 2.1 g/cm³ (typical) |
| Wear Rate (mg/MJ) | ≤ 8 mg/MJ (ISO 26867, sae J661) |
| Oil/Grease Resistance | Excellent (minimal μ reduction after contamination) |
| Standards Met | ISO 9001, IATF 16949, ECE R90 (as part of clutch assembly) |
The KTH-72042 Friction Plate begins with a precisely blended mixture of friction‑modifying fillers: phenolic resin, aramid pulp, ceramic particles, and friction stabilizers. This mixture is compression‑molded under high pressure and temperature to form a homogeneous facing. The facing is then bonded to a steel backing or directly riveted to the clutch disc (depending on application).
The groove pattern is cut using CNC routers to ensure consistent depth and width, providing channels for heat dissipation and dust removal. The plate’s surface is then heat‑treated to cure the resin and stabilize the friction properties. This process guarantees consistent performance from the first engagement to the last.
Each production batch is tested on a friction dynamometer to verify the coefficient of friction, fade behavior, and wear rate. A random sample from each lot is subjected to a high‑torque burst test to ensure the facing cannot separate from the carrier.
The NAO compound used in the KTH-72042 contains no asbestos, instead using aramid fibers for strength and ceramic particles for heat stability. This formulation is designed to have a flat μ‑temperature curve, meaning the pedal feel remains consistent whether the clutch is cold or hot.
The resin is a high‑temperature phenolic that does not glassify under heavy use, preventing sudden loss of friction. The plate also includes brass or copper chips (optional) to conduct heat away from the friction surface, further reducing the risk of thermal cracking.
Unlike sintered metal plates, this organic material is gentle on the flywheel and pressure plate, reducing wear on these expensive components.
The KTH-72042 is available as a loose friction plate for rebuilding clutch discs or as part of a complete clutch disc assembly. It is compatible with SINOTRUK HOWO, SHACMAN, and MAN clutch disc bodies using the same rivet pattern. Always consult the vehicle’s service manual to verify dimensions.
When replacing only the friction plate, ensure the disc hub is within runout limits. Install new rivets (supplied separately) and stake them properly. For most applications, replacing the complete clutch disc assembly is recommended to avoid issues with spring fatigue or hub spline wear.
If you are replacing a worn plate, also inspect the pressure plate friction surface and replace if scored or warped. Always replace the clutch release bearing at the same time.
To install a new KTH-72042 Friction Plate (as part of a clutch disc replacement), follow these steps: 1) Remove the transmission and clutch assembly.
2) Clean the flywheel and pressure plate friction surfaces with brake cleaner and a lint‑free cloth. Check for cracks or blueing – replace if out of specification.
3) Align the clutch disc (with the new friction plate) using a clutch alignment tool. The disc must be centered so that the transmission input shaft enters smoothly.
4) Torque the pressure plate bolts to the manufacturer’s specification in a star pattern (typically 25‑30 Nm for M8 bolts).
5) Reinstall the transmission. Do not force the input shaft – if resistance is felt, realign the disc.
If replacing only the friction plate on the disc hub: remove the old facing by drilling out rivets, clean the hub, bond the new plate with high‑temperature adhesive, and install new rivets. This procedure requires a hydraulic press. For most fleets, purchasing a complete clutch disc is simpler and more reliable.
The KTH-72042 Friction Plate is a wear item. Common signs of wear include clutch slippage under load, a high engagement point, or a chattering sensation when starting from a stop.
If the vehicle is used in heavy stop‑and‑go traffic or off‑road, inspect the clutch every 100,000 km. Measure the remaining friction material thickness: replacement is due when the rivet heads are within 0.5 mm of the surface (if riveted) or when thickness is less than 2.5 mm.
Avoid riding the clutch, as this generates excessive heat that can glaze the friction surface, causing temporary slippage. If glazing is suspected, a few heavy starts may burnish the surface, but replacement is the only permanent fix.
Each batch of KTH-72042 Friction Plates undergoes a comprehensive test regime: (1) Friction coefficient test on a inertia dynamometer per SAE J661, (2) Wear rate measurement (mg/MJ), (3) Shear strength test (destructive), (4) Thermal cycling (−40°C to +250°C, 20 cycles), (5) Oil immersion test (72 hours, no degradation), (6) Burst speed test (10,000 rpm, no failure).
The material is also tested for asbestos content (zero) and for compliance with European REACH regulations. The manufacturing facility is IATF 16949 certified. A certificate of conformance is available upon request.
The KTH-72042 is the same friction material used in OE clutch discs, ensuring identical performance to the original part.
A Brazilian mining fleet operating 50 SHACMAN dump trucks replaced their worn clutch friction plates with the KTH-72042. After 12 months, the plates showed only 25% wear under extreme off‑road conditions, compared to 60% wear with the previous supplier. Clutch engagement remained smooth, and no hot spots were observed on flywheels.
A European long‑haul fleet reported that the KTH-72042 eliminated clutch judder complaints on their HOWO tractors, improving driver satisfaction and reducing warranty claims. The fleet extended clutch change intervals from 250,000 km to 400,000 km.
Each KTH-72042 Friction Plate is packed in a sealed plastic bag within a cardboard box that includes protective foam inserts. The box is labeled with the SINOTRUK Homan logo, OEM number, and a QR code for authenticity verification.
A tamper‑evident hologram sticker on the box prevents counterfeiting. Counterfeit friction plates often have inconsistent color, soft edges, or a strong chemical smell. Genuine plates have a uniform dark brown color, a precise groove pattern, and a laser‑etched batch number.
Always purchase from authorized distributors. The genuine KTH-72042 comes with a 12‑month / 100,000 km limited warranty against material defects.
Summary: The SINOTRUK Homan Friction Plate (OEM KTH-72042) delivers reliable clutch engagement, heat resistance, and long wear life for heavy‑duty trucks. Upgrade your clutch system with this genuine OEM friction plate – the trusted choice for smooth power transfer and durability.
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