Durable High-Tin Bronze Copper Sleeve

Short Description:

Product Specifications

Name: Tin Bronze Copper Sleeve (Bushing)

Standard: ASTM B505 / B271 / B584, UNS C90500 / C90700 / C91000, RoHS Compliant, REACH Compliant

Material: C90500 (Tin Bronze, ~10% Sn), C90700 (Higher Tin), C91000 Variants

Form: Centrifugally cast, machined, or extruded tubular sleeves

Inner Diameter (ID): 20mm – 400mm (customizable)

Outer Diameter (OD): 40mm – 500mm (customizable)

Length: 50mm – 800mm (custom sizes available)

Wall Thickness: 5mm – 100mm

Surface: Precision machined finish, optional oil grooves, graphite plugging, or polished

Tolerances: ID/OD ±0.05mm to ±0.15mm (depending on size), Length ±1mm, Concentricity ≤0.05mm

Product Features:
•Outstanding wear resistance under high loads and slow speeds
•Excellent shock and impact absorption
•Superior corrosion resistance in freshwater, seawater, and moderate chemical environments
•High compressive strength and fatigue resistance
•Low coefficient of friction when paired with hardened steel shafts
•Good thermal conductivity and anti-seizure properties
•Self-lubricating behavior with optional embedded solid lubricants
•Consistent performance in heavy-duty sliding and oscillating applications

Application Field:
Heavy-duty plain bearings and bushings, Hydraulic cylinder and piston bushings, Pump impellers and wear rings, Valve stems and seats, Marine propeller shaft bearings, Crusher and rolling mill bushings, Earth-moving equipment pivot joints, Railroad locomotive and wagon bearings, Mining machinery components, Gear and worm wheel hubs, Press and injection molding machine guides

Send email to us

Product Detail

Product Tags

Video

Tin Bronze Copper Sleeve – Process & Quality Assurance Statement

Our tin bronze copper sleeves are manufactured to provide reliable, long-lasting performance in demanding bearing and sliding applications where premature wear or seizure cannot be tolerated.

Key process features

Manufacturing uses advanced centrifugal casting and precision machining techniques to produce dense, defect-free sleeves with excellent microstructure:
●Alloy Melting: High-purity copper and tin are melted with controlled additions to achieve exact composition and optimal fluidity.
●Centrifugal Casting: Molten alloy is poured into rotating molds to produce dense, porosity-free tubular blanks with uniform wall thickness.
●Heat Treatment: Controlled annealing relieves internal stresses and refines grain structure for improved machinability and mechanical properties.
●Rough Machining: Turning and boring establish near-net dimensions.
●Finish Machining: Precision grinding and honing deliver exact ID/OD tolerances and surface finish (Ra 0.4–1.6 μm typical).
●Optional Features: Cutting of oil grooves, drilling of lubrication holes, or insertion of graphite plugs as specified.
●Final Inspection & Protection: 100% dimensional check, surface lightly oiled or wrapped to prevent oxidation during storage and shipping.

Quality control system

● Full traceability from raw material to finished sleeve
● Mill test certificates and material certificates supplied with every order
● Retained samples ≥3 years for independent verification (SGS, BV, TÜV, etc.)
● 100% inspection of critical parameters:
• Chemical composition (optical emission spectrometry)
• Mechanical properties (tensile ≥380 MPa, hardness HB 90–120 typical, compressive strength testing)
• Dimensional accuracy (micrometers, CMM, bore gauges)
• Surface finish and defect inspection (visual + dye penetrant)
• Internal soundness (ultrasonic testing on all cast blanks)
● Conformance to or exceeding ASTM B505 / B271 requirements
● ISO 9001:2015 certified facility ensures every tin bronze copper sleeve delivers the durability, precision, and consistency required for your critical applications.