Automative Parts – Ground Sleeves

Automative Parts – Ground Sleeves

Core Features

  • Precision Hardened Surface: Manufactured from high-grade alloy steel, through-hardened and precision-ground to provide an ideal inner raceway for needle or cylindrical rollers.
  • Ultra-Fine Surface Topography: Features a super-finished outer diameter (OD) with specific roughness (Ra) values to minimize friction and ensure a stable lubricant film.
  • Dimensional Accuracy: Machined to extremely tight tolerances for roundness and parallelism, ensuring a perfect press-fit on the shaft without affecting the bearing’s internal clearance.
  • Wear and Corrosion Resistance: Often treated with specialized coatings or surface finishes to withstand the high-cycle, high-heat environments common in automotive drivetrains.
  • Versatile Mounting: Designed to provide a “renewable” surface; rather than replacing an entire expensive shaft if worn, only the ground sleeve needs to be replaced.

At Kriloha Ltd., we understand that “System-Longevity” is defined by the surface integrity of the most critical wear points. Our Automotive Ground Sleeves are our engineered answer for “Shaft-Protection” and “Friction-Optimization”. As a premier provider of industrial and automotive components, Kriloha has developed a sleeve series that balances mechanical invincibility with the precision agility required for modern vehicle engineering.

The engineering of our ground sleeve series is based on Raceway-Grade Metallurgy. By utilizing precision heat-treatment protocols, we ensure the sleeve maintains its hardness even under the extreme thermal cycles of a high-performance engine or transmission. At Kriloha, we verify that our sleeves feature a “Lead-Free” grind to prevent the lubricant from being “pumped” away from the bearing contact zone. This creates a “Rigid-Resilient” interface that secures your highest-value automotive assets against premature wear.

Manufacturing these sleeves involves strict Taper and Concentricity Verification. We ensure that every sleeve provides a perfectly cylindrical path for the rollers, eliminating the vibration and noise that can lead to drivetrain failure. Whether you are optimizing a prototype EV powertrain or maintaining a fleet of commercial vehicles, Kriloha Ground Sleeves provide the mechanical durability your application demands. By choosing Kriloha Ltd., you are investing in a “Surface-Hardening” technology that secures the reliability of your automotive systems.

Bearing Table

SR. NO. BEARING NO. BOUNDARY DIMENSIONS (in mm) MASS
(~ Kg.)
d D D1 B
1 RING 100x105x24.5
(Elring=04760700EZ0050,
O.E. No.=442.031.0627 tb)
100.000 105.000 24.500 0.150
2 RING 100×105/110×19
(Elring=08342700EZ0050,
O.E. No.=51.02130.0012 tb)
100.000 105.000 110.000 19.000 0.125
3 RING 110x145x32
(Elring=01216500EZ9999,
O.E.No.=355.356.125tb)
110.000 145.000 32.000 1.675
4 RING 115x120x21
(Elring=08342890EZ0050,
O.E.No.=403.032.0309 tb)
115.000 120.000 21.000 0.155
5 RING 115x145x32
(Elring=03808400EZ9999,
O.E.No.=346.356.1415 tb)
115.000 145.000 32.000 1.460
6 RING 119x145x26
(Elring=01216600EZ9999,
O.E.No.=946.356.0015 tb)
119.000 145.000 26.000 1.020

Primary Use Cases

  • Transmission Input/Output Shafts: Providing a hardened raceway for gear-support bearings in manual and automatic gearboxes.
  • Differential and Axle Assemblies: Serving as a precision interface for wheel bearings and pinion supports.
  • Engine Timing Systems: Used in idler pulleys and tensioners where the bearing must run directly on a sleeve-protected shaft.
  • Starter Motors and Alternators: Protecting the main drive shafts from the constant radial loads of high-speed rotation.
  • Heavy-Duty Truck Drivelines: Supporting the high-torque transfer in commercial vehicle U-joints and slip-shafts.

Frequently Asked Questions

1. Why use a ground sleeve instead of just hardening the shaft itself?
Using a sleeve is often more cost-effective and allows for a “modular” repair. If the raceway wears out, you can simply replace the sleeve instead of the entire (and much more expensive) shaft.
2. How are these sleeves typically installed?
They are usually press-fitted onto the shaft. In high-speed automotive applications, they can also be heated (shrink-fitted) to ensure they remain locked in place during operation.
3. Do these sleeves require a specific lubricant?
They should be lubricated according to the bearing type being used (needle or cylindrical). However, the precision finish of Kriloha sleeves is compatible with all standard automotive oils and synthetic greases.
4. Can Kriloha provide custom sizes for non-standard shafts?
Yes. We utilize high-precision grinding technology to produce sleeves to custom inner and outer diameters, as well as specific lengths required for unique drivetrain designs.
5. What is the standard hardness for these automotive sleeves?
Kriloha ground sleeves typically feature a surface hardness of HRC 58–64, providing the maximum possible fatigue life for the rolling elements.

 

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