About SleeveMFG
Precision sleeves made for demanding applications.
SleeveMFG is a precision sleeve manufacturer based in Dongguan, China, specializing in custom-machined metal sleeves and rotational components made to customer drawings.
Who We Are
A focused manufacturing partner for sleeve components.
Located in Dongguan, one of China’s major precision manufacturing hubs, SleeveMFG combines machining, grinding, secondary processing, and inspection to produce components with demanding dimensional and geometric requirements.
We support prototypes, low-volume orders, and ongoing production for industrial customers worldwide. Our team manufactures directly from 2D drawings, 3D models, or physical samples, following specified requirements for materials, tolerances, surface finish, heat treatment, and coating.
We do not rely on a standard catalog. We manufacture the sleeve your application requires.
What We Manufacture
Specialized in custom rotational components.
From simple cylindrical sleeves to complex parts with precision profiles, threads, grooves, shoulders, and cross holes, our manufacturing approach is built around your drawing and application.
Sleeve Components
Shaft sleeves, wear sleeves, bearing sleeves, spacer sleeves, pump sleeves, seal sleeves, guide sleeves, and bushings.
Complex Geometries
Threaded, flanged, stepped, thin-wall, and tubular components with grooves, keyways, blind holes, and internal or external profiles.
Broad Material Range
Stainless and alloy steels, tool and bearing steels, aluminum, copper alloys, Inconel, Monel, Hastelloy, and customer-specified grades.
Ø3–500 mm
Typical outside diameter range
±0.005 mm
Precision grinding tolerance
Ra 0.2 μm
Surface finish capability
Prototype to Production
Flexible order volumes
One Source, More Control
From machining through finishing and inspection.
A precision sleeve often requires more than turning. We coordinate CNC turning, milling, OD and ID grinding, centerless grinding, drilling, threading, knurling, heat treatment, coatings, honing, polishing, and other secondary operations.
Engineering-led sourcing
We work from drawings, models, samples, materials, and application requirements.
Controlled quality
Inspection support includes CMM, gauges, profile measurement, roughness testing, and hardness testing.
Production flexibility
Suitable for prototypes, replacement parts, low-volume work, and repeat production orders.
Global support
Clear communication, engineering documentation, and export support for customers worldwide.
Industries We Serve
Built for equipment that depends on reliable rotation.
Pumps & Fluid Handling
Pump shaft sleeves, seal sleeves, wear sleeves, and distance sleeves.
Motors & Power Transmission
Components for motors, gearboxes, couplings, and bearing assemblies.
Industrial Machinery
Guide sleeves, bearing sleeves, spacers, and automation components.
Mining, Marine & Energy
Wear-resistant, corrosion-resistant, and high-strength sleeve components.
Work With Us
Have a sleeve drawing or replacement part to discuss?
Send your PDF, STEP, DWG, DXF, or other engineering files with the material, quantity, tolerances, and surface treatment requirements. We will help define a practical manufacturing route.