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Brand: C.OEFT
OE numbers: 901089
Product Name: Transmission Steel Belt
Compatible model:
Product status:Remanufactured
Product weight: 2.080KG
Packaging size: 32X13X4 cm
Product packaging: Neutral Packaging
Car Series: Japanese
Car Type: for Nissan
1. Core Power Transmission in JF017 CVT Systems
As the central 传动 component of Nissan’s JF017 CVT, the JF017 901089 steel belt transfers power from the engine to the drive wheels. It operates between two variable-diameter conical pulleys (primary, connected to the engine; secondary, connected to the drivetrain). When the TCU activates hydraulic actuators to adjust pulley width, the belt moves along the pulley cones—riding higher on one pulley and lower on the other—to alter the transmission ratio, enabling stepless speed variation without traditional gear shifts.
2. Stepless Ratio Adjustment for Smooth Driving
The belt’s modular design—comprising 122 interlocked metal elements and two high-strength steel rings—allows it to adapt to changing pulley diameters. When the primary pulley narrows, the belt is forced outward, increasing its effective diameter and raising the ratio for higher speeds. When the primary pulley widens, the belt moves inward, lowering the ratio for slower speeds. This stepless adjustment eliminates gear shift shocks, providing a smooth and comfortable driving experience at all speed ranges.
3. Torque Management and Load Distribution
Designed to handle maximum torque outputs of up to 240 Nm (matching the JF017 CVT’s rated capacity), the steel belt distributes torque evenly across its elements and steel rings. The contoured contact surfaces of the elements ensure uniform pressure against the pulleys, preventing localized stress and wear. This torque-handling capability supports Nissan’s 1.6L, 2.0L, and 2.5L naturally aspirated engines, ensuring reliable power transfer during acceleration, towing light loads, and uphill driving.
4. Thermal Regulation and Wear Mitigation
The low-friction surface of the steel belt reduces heat generation during operation, helping maintain the CVT’s optimal operating temperature range (80-100°C). The chrome-nickel-titanium coating also minimizes metal-to-metal wear between the belt elements and pulleys, reducing metallic debris that can contaminate CVT fluid. This protects critical CVT components (e.g., pulleys, hydraulic actuators) from premature damage and extends the overall lifespan of the transmission.
5. TCU Feedback Integration for Adaptive Control
While the steel belt is a mechanical component, its performance directly informs the TCU’s adaptive control strategy. The TCU monitors data from CVT speed sensors and pressure sensors to assess the belt’s position and slippage. If the belt operates within normal parameters, the TCU maintains standard control; if slippage or irregular wear is detected (via speed mismatches between pulleys), the TCU adjusts pulley hydraulic pressure or illuminates the transmission warning light on the dashboard. This feedback loop ensures the CVT operates efficiently and safely, with the steel belt serving as a critical link in the system.
1. OE-Compliant Precision for Nissan JF017 CVT Transmissions
The JF017 901089 Transmission Steel Belt is tailor-made as a direct replacement for Nissan’s JF017 series continuously variable transmissions (CVT), which are fitted in mainstream Nissan models including the Sylphy, Tiida, Qashqai, and X-Trail. It strictly adheres to Nissan’s original equipment (OE) engineering standards, matching the genuine steel belt’s critical parameters—including a 2.4mm pitch length, 122 metal elements, and overall dimensional tolerance of ±0.05mm. This exacting compliance eliminates common aftermarket issues such as improper pulley fitment, belt slippage, or miscommunication with the CVT Control Unit (TCU). Mechanics can achieve hassle-free installation without modifying the CVT’s conical pulleys or recalibrating the TCU, ensuring seamless integration with Nissan’s JF017 transmission system.
2. Reinforced Alloy Construction for Enhanced Durability
Crafted from a high-performance alloy blend, the steel belt features a base layer of high-tensile SUS301 stainless steel (ultimate tensile strength: 1,750 MPa) and a surface coating of chrome-nickel-titanium composite. This dual-layer construction delivers 15% higher wear resistance than standard CVT steel belts. It undergoes a precision heat treatment process—including vacuum carburizing and tempering—to achieve a surface hardness of HV 640 and a tough core, enabling it to withstand continuous pulley pressure of up to 4,800 N and resist fatigue even after 280,000+ kilometers of operation. This robust design significantly reduces the risk of premature failures like element cracking or belt snapping, a key pain point for CVT transmissions.
3. Low-Friction Profile for Optimal Power Efficiency
The steel belt’s metal elements feature a micro-polished surface with a roughness value (Ra) of ≤0.3μm, minimizing frictional resistance between the belt and conical pulleys. Each element is also engineered with a contoured contact face that maximizes the contact area with the pulleys, boosting power transfer efficiency to 91%. This low-friction design reduces energy loss, lowers CVT operating temperatures by 4-7°C compared to generic belts, and extends the service life of CVT fluid (NS-3) by up to 30%. For Nissan vehicle owners, this translates to improved fuel economy (0.8-1.5 MPG) and smoother, more responsive acceleration.
4. Stable Ratio Transitions Across All Driving Scenarios
Equipped with a precision-machined pitch alignment system, the JF017 901089 steel belt maintains consistent spacing between its metal elements during ratio changes. This stability ensures seamless transitions across the JF017 CVT’s full ratio range (0.42-2.37) and responds to TCU pulley adjustment commands in ≤12ms. Whether accelerating from a stop, cruising on the highway, or climbing steep grades, the belt avoids slippage or shudder—eliminating the “rubber band effect” common in inferior CVT belts. For example, during sudden acceleration, the belt smoothly shifts its position on the pulleys to deliver linear power without lag.
5. Cost-Effective and Maintenance-Friendly Design
Offering OE-level performance at 25-35% lower than genuine Nissan OEM steel belts, the JF017 901089 provides exceptional value for both individual owners and repair shops. Its durable construction reduces replacement frequency, cutting long-term maintenance costs. The belt is fully compatible with Nissan’s standard CVT service procedures and requires no specialized tools for installation—mechanics can use existing JF017 CVT assembly equipment, minimizing labor time and operational downtime.
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