Precision internal diameter manufacturing
Precision ID Grinding for Custom Machined Sleeves
SleeveMFG manufactures custom metal sleeves for OEMs, MRO providers, and industrial distributors that require precise bore control, concentricity, and specialized surface finishes.
Based in Dongguan, China, we are a direct-to-print manufacturer. We machine the specific sleeve shown on your engineering drawing, using ID grinding to achieve tolerances beyond standard turning capabilities.
±0.005 mm
Grinding tolerance
Ra 0.2 μm
Surface finish capability
500 mm
Maximum outside diameter
Direct-to-print manufacturing
From material sourcing and machining to inspection, heat treatment, and coating coordination.
Why grinding matters
Built for demanding sleeve fits and bore performance
Standard CNC turning is often insufficient for components that require high-precision fits or controlled surface characteristics. ID grinding provides the dimensional and geometric control needed for reliable assemblies.
01
Dimensional accuracy
Bore diameter tolerances within ±0.005 mm for precise fits and repeatable assembly.
02
Geometric control
Superior roundness and cylindricity create uniform contact with mating shafts and housings.
03
Surface integrity
Finishes down to Ra 0.2 μm help reduce friction and extend the life of seals and bearings.
04
Hardened material support
Grinding is optimized for tool steels and alloys that cannot be finished effectively with conventional cutting tools.
Manufacturing capabilities
One production partner from raw material to final inspection
We manage the complete production cycle for custom sleeves, supporting low-volume prototypes as well as full-scale production runs.
Dimensional envelope
Ø 500 mm OD / Ø 450 mm bore
Large-format sleeve production with precision control throughout the internal and external diameters.
Precision fits
H6/H7 and h6/h7
Expert execution of fit requirements so components arrive ready for your assembly process.
Grinding tolerance
Down to ±0.005 mm
Controlled bore dimensions, concentricity, runout, and cylindricity matched to your drawing.
Production model
Prototype to production
Flexible capacity for development samples, replacement parts, and repeat production programs.
Process depth
Finishing operations coordinated around your application
Beyond basic ID grinding, we coordinate secondary operations to deliver complete, ready-to-assemble components for demanding environments.
Precision OD/ID grinding
Simultaneous control of external and internal diameters for maximum concentricity.
Centerless grinding
Consistent diameter control for high-volume cylindrical sleeve production.
Honing and geometry correction
Surface texture and bore geometry refined to suit your functional requirements.
Surface treatments
Hard Chrome, Electroless Nickel, Nitriding, and PVD/DLC coatings for improved wear resistance.
Materials we process
Metals selected to match your print and operating environment
Stainless steels
304, 316, 17-4PH, 15-5PH
Alloy and tool steels
4140, 4340, D2, A2, 52100
Non-ferrous metals
Aluminum 6061/7075, brass, bronze, copper alloys
Corrosion-resistant alloys
Inconel, Monel, Hastelloy
Service paths
Support for both new equipment and repair programs
For OEM manufacturers
Production qualityWe provide consistent, repeatable sleeve production for equipment assembly lines. Each batch is controlled against your tolerances and surface finish requirements, with support for material certifications and inspection reports.
For MRO and repair facilities
Flexible volumesWe manufacture replacement sleeves for worn or obsolete equipment. Provide a physical sample or dimensional data and we can reverse-engineer a solution without requiring a massive inventory commitment.
Quality assurance
Inspection data that supports confident assembly
Every sleeve produced by SleeveMFG undergoes a multi-stage inspection process. Our quality lab verifies the critical dimensions that affect fit, sealing, and service life.
Discuss your inspection requirements →CMM inspection
Coordinate measurement for dimensional and geometric verification.
Bore gauges
Internal diameter checks against specified fits and tolerances.
Surface roughness testing
Verification of surface finish requirements down to Ra 0.2 μm.
Profile projection
Profile and form checks for drawing-critical features.
Simplify your supply chain
One accountable partner for turning, grinding, treatment, and inspection
Managing multiple vendors for turning, grinding, heat treatment, and coating adds unnecessary complexity and risk. SleeveMFG coordinates the complete manufacturing sequence, from rough machining to final precision grinding and surface treatment, according to your drawing.
Ready for your next sleeve project?
Send your drawing and requirements for a fast, technical response.
Start an RFQRequest a quote
Send your sleeve requirements to our technical team
Whether you need a prototype for a new design or a reliable supply partner for ongoing production, we are ready to review your project.
info@sleevemfg.com
Facility
Please include your PDF, STEP, or DXF files, along with the required material and quantity.
SleeveMFG — Custom Sleeves. Made to Your Drawing.