Automotive & Construction Equipment
Custom Machined Sleeves for Demanding Equipment
SleeveMFG manufactures custom-machined sleeves, bushings, and spacers for OEMs and MRO providers operating in high-load, high-vibration, and abrasive environments.
From 2D drawings and 3D models to physical samples, we produce components with the precise fit and finish required to help prevent premature equipment failure and reduce maintenance downtime.
Precision manufacturing
Built for OEM and MRO requirements
Automotive and construction applications often demand specific interference fits, tight concentricity, and complex geometries. Our Dongguan facility supports the full manufacturing cycle, from raw material sourcing through final inspection.
CNC turning and milling
Precise profiling of shoulders, flanges, grooves, and other critical geometries.
Precision grinding
OD and ID grinding for bearing seats, seal surfaces, and demanding dimensional requirements.
Feature machining
CNC drilling, threading, keyway cutting, and snap-ring groove machining.
Quality control
Inspection reports with CMMs and calibrated gauges to verify concentricity, roundness, and cylindricity.
Production consistency for OEMs
Production runs maintain consistent tolerances across the complete batch, helping every sleeve fit the assembly line without adjustment.
Fast recovery for MRO teams
Reverse engineering of obsolete or worn sleeves helps return equipment to service without waiting for long OEM lead times.
Technical specifications
Capabilities for rotating machinery
We work to manufacturing parameters suited to high-performance automotive and construction equipment components.
| Parameter | Typical Capability |
|---|---|
| Outside Diameter | Ø3 mm – Ø500 mm |
| Inside Diameter | Ø1 mm – Ø450 mm |
| Part Length | 3 mm – 1500 mm |
| CNC Turning Tolerance | ±0.01 mm |
| Precision Grinding Tolerance | ±0.005 mm |
| Concentricity / Runout | Down to 0.01 mm |
| Surface Finish | Down to Ra 0.2 μm |
| Threads | Metric, UNC, UNF, NPT, BSP |
Materials and finishing
Match the material to the operating environment
Mud, dust, high temperatures, and chemical contaminants can quickly shorten component life. We help select materials and secondary treatments suited to the application.
Carbon and alloy steels
Materials such as 4140 and 42CrMo for high-strength requirements in gearboxes and hydraulic systems.
Stainless steels
316L and 17-4PH for corrosion resistance in fluid handling or exposed marine-grade construction equipment.
Bearing steels
52100 and GCr15 for high-wear applications requiring durable rotating surfaces.
Hardening
Induction hardening, quenching, and tempering to increase surface hardness and wear resistance.
Corrosion protection
Black oxide, zinc plating, electroless nickel plating, and passivation.
Wear resistance
PVD and DLC coatings for components operating in high-friction environments.
Why partner with SleeveMFG?
Specialized in rotational components
Our focus allows us to anticipate common challenges associated with thin-wall distortion, thermal expansion, and fit precision.
-
✓
Direct-to-drawing manufacturing. Every component is machined to your specific drawing requirements rather than selected from a standard catalog.
-
✓
Flexible production. Support for single-piece prototypes, testing programs, and full-scale production runs.
-
✓
Simplified supply chain. Heat treatment, grinding, and surface finishing are coordinated through one manufacturing partner.
Request a custom sleeve quote
Send your engineering requirements
Share your engineering files and project requirements with our team. We will review your drawings and provide a quotation covering lead times and manufacturing feasibility, typically within 24 hours.
Required for quote
- Technical drawing in PDF, DWG, or DXF format, or a 3D model in STEP or STP format.
- Material specifications.
- Quantity required.
- Tolerance and surface finish requirements.
- Surface treatment or heat treatment needs.
Email your files to info@sleevemfg.com.
SleeveMFG