Synchronizer Sleeve Manufacturer
BLUE synchronizer sleeves offer high surface hardness, precise internal splines, excellent strength, and durability. Manufacture for the aftermarket, our standard synchronizer sleeves come with no mold fees.
Why Choose BLUE?
BLUE provides top quality synchronizer sleeves with high strength and good durability, and free mold design services—your trusted OEM & ODM supplier.
BLUE High Quality Standards
BLUE guarantee the quality of your sintered synchronizer sleeves with an IATF 16949: 2016 certified quality management system. Free samples are available for testing.
Standard PM Parts Shop
BLUE has a full range of standard PM parts in stock for fast delivery. Visit our standard parts shop to find the exact match for your applications.
Free Mold Design Service
With over 20 years of expertise, BLUE provides free, high-precision mold design services tailored to your needs. Trust our experience to deliver for you!
BLUE Synchronizer Sleeve in China
BLUE offers a wide range of synchronizer sleeves for manual and automatic transmissions.
Powder Metallurgy Synchronizer Sleeve
Powder metallurgy synchronizer sleeves have the advantages of near net shape, tight tolerance and high tooth profile accuracy.
Sintered Synchronizer Sliding Sleeve
Sintered synchronizer sliding sleeves are made from metal powder raw materials and formed into its final shape through single compaction.
Powder Metal Synchronizer Sleeve
BLUE powder metal synchronizer sleeves have precise internal splines and ensure smooth speed changes with other synchronizer parts.
What is a Synchronizer Sleeve?
A synchronizer sleeve is a sliding sleeve in a manual transmission that enables gears to engage smoothly by locking the selected gear to the transmission shaft once speeds are synchronized. It fits over the synchronizer hub and moves back and forth along the hub’s external teeth when the driver shifts gears.
During a gear change, the sleeve is pushed toward the target gear. As it moves, it first contacts the blocker ring, which creates friction against the gear’s cone surface to match the rotational speeds. Once synchronization is achieved, the sleeve slides past the blocker ring and its internal teeth mesh with the gear’s engagement teeth, locking the gear to the shaft without grinding.
Synchronizer sleeve is important for smooth, quiet, and precise shifting. Because it must withstand repeated sliding, high loads, and constant engagement cycles, it is typically made from high-strength machined steel or P/M materials with excellent wear resistance.
How to Manufacture PM Synchronizer sleeves?
PM synchronizer sleeves are made by compacting metal powders in a precision die to shape the internal dog teeth, external splines, and the overall sleeve geometry. After compaction, the part is sintered at high temperature to develop the required strength, dimensional stability, and wear resistance. Powder metallurgy is ideal for sleeves thanks to its consistent tooth profiles and controlled tolerances.
Once sintered, the sleeves typically undergo several finishing steps to enhance performance. These may include sizing to refine dimensions, CNC machining for areas that need higher accuracy, and heat-treatment processes such as carburizing or induction hardening to improve fatigue and wear resistance. Grinding is added when extremely precise surfaces are required.
Automakers prefer sintered synchronizer sleeves because they offer high strength, stable quality, and cost-effective production. The method also allows complex features to be formed without extensive machining
BLUE Synchronizer Sleeve Features
BLUE synchronizer sleeves are manufactured under the control of the IATF 16949:2016 system.
Our sintered synchronizer sleeves are available in various types for manual and dual-clutch transmissions.
BLUE’s sintered synchronizer sleeves feature a density of up to 7.2 g/cm³ and good mechanical strength.
Our synchronizer hubs are manually deburred and vibrated to achieve good surface roughness.
Post-Sintering Processes
BLUE offers the following post-sintering processes to enhance the mechanical and physical properties of synchronizer sleeves.
- Heat Treatment: Alters the internal microstructure of the material to improve hardness, strength, toughness, and ductility.
- Copper Infiltration: Fills the pores of sintered sliding sleeves with molten copper, increasing density, strength, and wear resistance.
- Steam Treatment: Commonly applied to iron-based parts, it forms a thin oxidized surface layer (Fe3O4), enhancing wear resistance, corrosion protection, and surface hardness.
Adavantages of PM Synchronizer Sliding Sleeve
Near-Net Shape
Powder metallurgy enables the direct formation of the internal spline shape of the synchronizer sleeve through pressing, minimizing the need for secondary processing.
Tight Tolerances
Sintered synchronizer sliding sleeves feature precise dimensional tolerances and high tooth profile accuracy.
Consistent Quality
Powder metallurgy assures excellent quality consistency for synchronizer sliding sleeves in large-scale production.
Custom Synchronizer Sleeve Specifications
This table shows our manufacturing capabilities for customized synchronizer sleeves, including material, density, hardness, tolerance, and surface treatment.
| Attribute | Value |
|---|---|
| Material | FC-0205, FN-0205, SMF4040, SMF9060, D39 |
| Density | 6.8-7.0g/cm3 |
| Hardened Hardness | Min. 40 HRC |
| Tolerance | ±0.01 mm |
| Tooth Accury | DIN/ISO 6 – 8 |
Get Your Synchronizer Sleeve Now!
