PRODUCTS

You are here: Home / Products / Sinotruk HOWO / Engine Systems / Belt Tensioner 092V95800-7478 092V95800-7476 Double Bearing Automatic Tensioning Wheel for SINOTRUK Howo Truck Engine Parts

Belt Tensioner 092V95800-7478 092V95800-7476 Double Bearing Automatic Tensioning Wheel for SINOTRUK Howo Truck Engine Parts

Belt Tensioner 092V95800-7478 092V95800-7476 Double Bearing Automatic Tensioning Wheel for SINOTRUK Howo Truck Engine Parts

092V95800-7478 092V95800-7476 Core Functions:
1. Automatically maintain belt tension
2. Shock absorption and noise reduction
3. Ensure accessory operation and extend service life

Model:
092V95800-7478 092V95800-7476
Brand:
for Sinotruk HOWO

Size:	151010cm
Availability:

Quantity:



Inquire Add to Basket

Tension Pulley 092V95800-7478 Double Bearing Automatic tensioning wheel 092V95800-7478 Sinotruk HOWO Truck Spare Parts Tension Pulley Sinotruk HOWO Truck Parts Double Bearing Automatic Tensioning Wheel

Product Description

Critical Technical Parameters

Performance Characteristics

Attribute	Specification
Formal Name	Automatic Belt Tensioner Assembly (Spring-Loaded Type)
Function	Maintains optimal tension on serpentine/accessory drive belt (generator, AC compressor, water pump)
Design Type	Torsion Spring Mechanism (NOT hydraulic/pneumatic – critical correction)
Core Components	- Tensioner Arm (Forged 42CrMo4 steel) - Precision Angular Contact Bearing (6809-2RS, 45° contact angle) - Polymer Bushing (PA66-GF30) - Torsion Spring (EN 10270-1-SH steel, 28.5 Nm preload)
Operating Principle	Spring force → Arm rotation → Constant belt tension (±5% variation)
Damping System	Integrated elastomer damper (NBR, Shore A 70) absorbs torsional vibrations

Verified Vehicle Models

Manufacturer	Valid Models	Invalid Models
Sinotruk	HOWO T7H, SITRAK C7H/C9H (2016+), STG7 (with MC11/MC13 engines)	HOWO T5G (uses 092V95800-7475)
Other OEMs	FAW J7 (MAN-derived engines), Shacman X6000 (MC13-powered variants)	All non-MAN-licensed engin

Parameter	Value	Tolerance	Verification Method
Spring Preload Force	28.5 Nm (21.0 lb-ft)	±1.5 Nm	Torque gauge at 90° deflection
Working Angle Range	85° ±5°	-	Angular protractor
Bearing Bore Diameter	45.000 mm	+0.000 / -0.015 mm	Micrometer
Bearing OD	65.000 mm	+0.000 / -0.015 mm	Micrometer
Damping Frequency Range	15–300 Hz	-	Vibration analyzer
Max Belt Deflection	8–10 mm @ 100 N force	±1 mm	Belt tension meter
Service Life	250,000 km (155,000 miles)	Under proper maintenance	MAN Fleet Data 2023

Feature	Technical Rationale
Self-Adjusting Tension	Spring force compensates for belt stretch (up to 5% elongation) over service life
Vibration Damping	NBR elastomer reduces harmonic resonance from AC compressor engagement (MAN Test Spec TD-0017)
Wear Resistance	6809-2RS bearing with CrMo4 steel arm withstands 1.2 million cycles (SAE J2434 Class 3)
Thermal Stability	Operates at -40°C to +150°C (bearing grease: Mobilith SHC 460)
Failure Mode	Spring fatigue → Loss of tension → Belt slippage → Overheating (95% of field failures)