HUB-LFT Low-Torque Hub Unit

Specifications

How to choose Hub Unit Bearings

Points to check when selecting, with the values for this product (HUB-LFT Low-Torque Hub Unit).

1. 1. Select a rating that matches the vehicle axle load

   Hub unit bearings directly receive the vehicle weight and moment loads during cornering, so confirm that the axle load of the applicable vehicle falls within the product's rated range. The axle load range of the listed products is 4.9 to 19.7 kN. Insufficient margin against the axle load may lead to early flaking and play.

2. 2. Match P.C.D. and bolt count to the wheel

   The pitch circle diameter of the wheel mounting holes and the number of hub bolts must match the wheel side, otherwise installation is not possible. The P.C.D. of the listed products is 100 to 139.7 mm, and the bolt count is 4 to 6. Verify against the vehicle's original equipment specifications when selecting.

3. 3. Match the generation (structural type) to the vehicle

   The first to third generations differ in how they attach to the knuckle and how they are assembled with the hub. Select a generation that suits the vehicle design. The third generation excels in rigidity and weight reduction due to integration, but the bearing cannot be replaced alone and must be replaced as a complete unit.

4. 4. Confirm whether it is for a driven or non-driven wheel

   Driven-wheel types have a spline hhole in the hub to accommodate the drive shaft. Their shape differs from non-driven types, and they are not interchangeable. Check the classification according to the vehicle's drive system and mounting position, such as FF, FR, or 4WD vehicles.

5. 5. Confirm compatibility with ABS sensors

   Types with built-in rotation sensors or magnetic encoders supply wheel speed signals to ABS and vehicle stability control systems. If the sensor method on the vehicle side or the presence of a sensor or encoder does not match, the control system will not operate correctly.

6. 6. Compare low-torque performance and mud and water resistance

   This product: Rotational torque reduction rate (compared to current product) 50 %

   Improved dedicated grease and seal structures have achieved a 50% reduction in rotational torque compared with current products, contributing to better fuel economy and electric vehicle power consumption. On the other hand, reducing seal contact increases the risk of mud and water ingress. Therefore, also check whether mud and water resistance is ensured through structures such as labyrinth designs.

This guide was written by AI based on the listed products' documents and specification items.

About Hub Unit Bearings and all products

Description

A new grease, with thickener, base oil and additives optimized for the hub operating environment, and a double axial lip seal that enables low torque without compromising sealing performance have been adopted. Hub ASSY torque is reduced by 50% compared with the current product. When used on the four wheels, it has the effect of improving vehicle fuel efficiency by 0.5%.

FAQ

Q. What applications can the HUB-LFT Low-Torque Hub Unit be used for?

A. It is used as a hub for the four wheels of automobiles.

Q. How does the HUB-LFT Low-Torque Hub Unit reduce torque?

A. It adopts a dedicated grease with thickener, base oil and additives optimized for the hub operating environment, and a double axial lip seal that enables low torque without compromising sealing performance.

Q. How much does the HUB-LFT Low-Torque Hub Unit reduce torque and what is its effect on fuel efficiency?

A. Hub ASSY torque is reduced by 50% compared with the current product. When used on the four wheels, it has the effect of improving vehicle fuel efficiency by 0.5%.

Written by AI based on the content of the source documents.

Source documents

• Catalog LFT-Series 低トルク軸受 Open page 4
  Found on: https://koyo.jtekt.co.jp/support/catalog-download/