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Brand: C.OEFT
OE numbers: JF011
Product Name: Transmission Steel Belt
Compatible model:
Product status:Remanufactured
Product weight: 1.4891KG
Packaging size: 32X13X4 cm
Product packaging: Neutral Packaging
Car Series: Japanese
Car Type: for Nissan
1. Core Power Transmission for High-Torque CVTs
As the central component of Nissan’s JF011 CVT, the JF011 steel belt transfers power from 2.5L-3.5L high-torque engines to the drive wheels. It operates between two large-diameter variable 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. This enables stepless speed variation, ideal for balancing power and efficiency in mid-size vehicles used for both urban commuting and highway cruising.
2. Stepless Ratio Adjustment for Versatile Driving Scenarios
The belt’s modular design—comprising 132 interlocked high-strength metal elements and two reinforced steel rings—adapts to the JF011 CVT’s wide pulley diameter range. Lower ratios (0.45-1.2) provide high torque multiplication for quick acceleration from stops or towing light trailers (up to 1,500 kg). Higher ratios (1.2-2.40) optimize fuel efficiency for highway cruising at 100-120 km/h. This stepless adjustment eliminates gear shift shocks, ensuring a smooth driving experience across diverse scenarios, from city traffic to long-distance trips.
3. High-Torque Management & Load Distribution
Designed to handle maximum torque outputs of up to 300 Nm (matching the JF011 CVT’s rated capacity), the steel belt distributes torque evenly across its elements and steel rings. The tungsten-carbide coated contact surfaces ensure uniform pressure against the pulleys, preventing localized stress and wear even during high-torque operations. This capability ensures reliable power transfer for accelerating with a full passenger load, towing small trailers, or climbing steep inclines—key requirements for mid-size family vehicles.
4. Thermal Regulation & Wear Mitigation
The low-friction surface finish of the steel belt reduces heat generation during high-torque operation, helping maintain the JF011 CVT’s optimal temperature range (85-105°C)—critical for preventing overheating under heavy loads. The tungsten-carbide coating minimizes metal-to-metal wear between elements and pulleys, reducing metallic debris that can contaminate CVT fluid. This protects critical components like pulleys, hydraulic actuators, and the valve body from premature damage, extending the overall lifespan of the JF011 CVT.
5. TCU Feedback Integration for Adaptive High-Torque Control
The steel belt’s performance directly informs the JF011 CVT’s TCU adaptive control strategy. The TCU monitors data from speed sensors, pressure sensors, and torque sensors to assess the belt’s position, slippage, and load status. In high-torque scenarios (e.g., towing), the TCU uses this data to increase pulley pressure, ensuring the belt maintains grip; if slippage or irregular wear is detected, it adjusts hydraulic pressure or illuminates the transmission warning light. This feedback loop ensures the CVT operates efficiently and safely under varying load conditions, with the JF011 steel belt serving as the critical mechanical link in the system.
1. OE-Precise Compatibility for Nissan JF011 High-Torque CVTs
The Transmission Steel Belt JF011 is exclusively engineered as a direct replacement for Nissan’s JF011 series continuously variable transmissions (CVT)—designed for mid-size vehicles with higher-torque engines. It is fully compatible with Nissan models such as the Altima, Maxima, and Murano equipped with 2.5L to 3.5L naturally aspirated or turbocharged engines. Adhering strictly to Nissan’s OE standards, it matches the genuine steel belt’s critical parameters: 2.5mm pitch length, 132 metal elements, and overall dimensional tolerance of ±0.04mm. This exact compliance eliminates aftermarket issues like pulley misalignment, belt slippage, or CVT Control Unit (TCU) signal asynchrony. Mechanics can achieve seamless installation without modifying the JF011 CVT’s conical pulleys or recalibrating the TCU, ensuring perfect integration with Nissan’s mid-size vehicle powertrain systems.
2. High-Tensile Alloy Construction for Enhanced Torque Resistance
Crafted from a premium high-strength alloy composite, the JF011 steel belt features a base layer of SUS301 stainless steel (ultimate tensile strength: 1,900 MPa) and a tungsten-carbide coating on contact surfaces. This dual-layer design delivers 25% higher torque-bearing capacity than steel belts for lower-tier CVT models. It undergoes a precision heat treatment process—including vacuum carburizing and high-temperature tempering—to achieve a surface hardness of HV 680 while maintaining core toughness. The belt can withstand continuous pulley pressure of up to 5,500 N and resist fatigue even after 300,000+ kilometers of operation, perfectly suited for the higher torque demands (up to 300 Nm) of Nissan’s 2.5L-3.5L engines.
3. Low-Friction Design for Efficient Power Transfer & Durability
The steel belt’s metal elements feature a super-finished surface with a roughness value (Ra) of ≤0.15μm, minimizing frictional resistance between the belt and conical pulleys. This low-friction design boosts power transfer efficiency to 93%—3% higher than generic steel belts—reducing energy loss and improving fuel economy by 1-2 MPG for mid-size Nissan vehicles. The tungsten-carbide coating also enhances wear resistance, reducing element abrasion by 40% compared to standard coatings. Additionally, reduced friction lowers CVT operating temperatures by 6-8°C, extending the lifespan of Nissan NS-3 CVT fluid and protecting internal components from heat-related damage.
4. Stable Ratio Transitions Under High Loads
Equipped with an advanced pitch stabilization system, the JF011 steel belt maintains consistent spacing between metal elements even during high-torque operations—such as towing light loads or climbing steep grades. It responds to TCU pulley adjustment commands in ≤8ms, enabling smooth transitions across the JF011 CVT’s ratio range (0.45-2.40) without slippage or shudder. For example, when accelerating a fully-loaded Murano uphill, the belt adapts seamlessly to pulley width changes, delivering linear power output and eliminating the “rubber band effect” common in inferior CVT belts under high load.
5. Cost-Effective & Maintenance-Friendly for Mid-Size Vehicles
Offering OE-level performance at 25-30% lower than genuine Nissan OEM steel belts for JF011 CVTs, the JF011 steel belt provides exceptional value for mid-size vehicle owners and repair shops. Its durable construction reduces replacement frequency, cutting long-term maintenance costs. The belt is fully compatible with Nissan’s standard JF011 CVT service procedures and requires no specialized tools for installation—mechanics can use existing CVT assembly equipment, minimizing labor time and vehicle downtime for daily commuters or family vehicle users.
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