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3rd Generation Ball Hub Unit (for Driven Wheels)

第3世代 ボールハブユニット / JTEKT Corporation (Official website) / Listed on page 1 of the document

A 3rd generation ball hub unit supporting driven wheels. Combines low torque design with mud water resistance and suits a wide range of vehicles from kei cars to SUVs.

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3rd Generation Ball Hub Unit (for Driven Wheels) on page 1 of JTEKT Corporation "第3世代 ボールハブユニット"
Source: JTEKT Corporation「第3世代 ボールハブユニット」page 1
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Specifications

Compatible Shaft Load 4.9–16.7 kN
Wheel mounting hole P.C.D. 100–139.7 mm
Number of wheel bolts 4~6 本

第3世代 ボールハブユニット model comparison

Compare 2 models in the same series by specification.

Model Compatible Shaft Load Wheel mounting hole P.C.D. Number of wheel bolts
第3世代 ボールハブユニット（従動輪用） This product 4.9–16.7 kN 100–139.7 mm 4~6 本
第3世代 ボールハブユニット（駆動輪用） 6.3–19.7 kN 100–139.7 mm 4~6 本

How to choose Hub Unit Bearings

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

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

    This product: Compatible Shaft Load 4.9–16.7 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 hub unit for driven wheels with 3rd generation structure, featuring an outer ring flange and shaft. Low torque grease and seals with reduced number of contact lips suppress sliding resistance, while labyrinth and oke structures reduce ingress of muddy water. Multiple models with different inner ring bore diameters and mounting dimensions can be selected according to the nominal number.

Features

  • Reduced sliding resistance through low torque design
  • Improved mud water resistance with labyrinth and oke structures
  • Grease with excellent lubricity and fretting resistance
  • Outer ring flange shape balancing strength, rigidity and weight reduction
  • 3rd generation structure enhancing assembly and reliability

Applications

  • Kei cars
  • A-segment and B-segment passenger cars
  • C-segment passenger cars
  • D-segment passenger cars
  • E-segment passenger cars
  • SUVs and pickup trucks

FAQ

Q. What types of vehicles can the 3rd Generation Ball Hub Unit (for Driven Wheels) be used on?
A. It is compatible with 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 applicable axle load, wheel mounting hole P.C.D., and number of wheel bolts for the 3rd Generation Ball Hub Unit (for Driven Wheels)?
A. The applicable axle load is 4.9 to 16.7 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 is the mud water resistance and sliding resistance of the 3rd Generation Ball Hub Unit (for Driven Wheels) designed?
A. Sliding resistance is suppressed by low torque grease and seals with a reduced number of contact lips. Labyrinth and oke structures reduce the ingress of muddy water.
Q. How should I select the model of the 3rd Generation Ball Hub Unit (for Driven Wheels)?
A. You can select from multiple models with different inner ring bore diameters and mounting dimensions according to the nominal number.

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

Source documents

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