3rd Generation Ball Hub Unit (for Drive Wheels)

Specifications

第3世代 ボールハブユニット model comparison

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How to choose Hub Unit Bearings

Points to check when selecting, with the values for this product (3rd Generation Ball Hub Unit (for Drive Wheels)).

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

   This product: Compatible Shaft Load 6.3–19.7 kN

   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

   This product: Wheel mounting hole P.C.D. 100–139.7 mm

   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

   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 3rd generation hub unit with the shaft and inner-side flange integrated. Labyrinth and oke (wooden tub) structure seals suppress the intrusion of muddy water, and low-torque grease is adopted using low-viscosity base oil and finely dispersed thickener particles. It supports a wide range of vehicle classes from kei cars to SUVs and pickup trucks, and models can be selected by call number according to application.

FAQ

Q. What vehicle classes can the 3rd Generation Ball Hub Unit (for Drive Wheels) be used on?

A. It supports a wide range of vehicle classes, from kei cars to SUVs and pickup trucks. Applications are kei cars, A-segment and B-segment passenger cars, C-segment passenger cars, D-segment passenger cars, E-segment passenger cars, and SUVs and pickup trucks.

Q. What are the supported axle load, wheel mounting hole P.C.D., and number of wheel bolts for the 3rd Generation Ball Hub Unit (for Drive Wheels)?

A. The supported axle load is 6.3 to 19.7 kN, the wheel mounting hole P.C.D. is 100 to 139.7 mm, and the number of wheel bolts is 4 to 6.

Q. How much does the 3rd Generation Ball Hub Unit (for Drive Wheels) reduce friction and improve EV electric efficiency?

A. Low-friction bearings and seals reduce friction loss by 65% compared with conventional products. This contributes to improved EV electric efficiency.

Q. Can the 3rd Generation Ball Hub Unit (for Drive Wheels) be used in environments with a lot of muddy water?

A. It is designed to suppress the intrusion of muddy water with labyrinth and oke structure seals. Improved mud and water resistance is a key feature.

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

Source documents

• Catalog 第3世代 ボールハブユニット Open page 2
  Found on: https://koyo.jtekt.co.jp/support/catalog-download/