Bronze Bearing Material Matrix & Industry Standard Selection Guide
Bronze Bearing Material Matrix & Industry Standard Selection Guide
High-Performance Self-Lubricating Bronze Bushing Solutions & Technologies. Minimize downtime, extend service life, and reduce costs for dynamic applications.
Bronze Bearing Material Matrix & Industry Standard Selection Guide
A consolidated engineering reference covering wrapped phosphor bronze, graphite-plugged, PTFE composite, cast tin bronze, aluminium bronze, sintered bronze, brass and composite structures — with industry standard material data, characteristics and application-point mapping.
1Material Family Overview (Matrix)
Bronze bearing materials are grouped by base alloy and manufacturing process into two broad families: copper-based alloy bodies (wrapped phosphor bronze, cast tin bronze, aluminium bronze, sintered bronze, brass) and composite structures (graphite-plugged, PTFE composite, steel-backed bimetal, machined oil groove). The matrix below gives a full picture.
| Material type | Manufacturing process | Representative grade / series | Load | Self-lubr. | Corrosion | Cost | Typical duty profile |
|---|---|---|---|---|---|---|---|
| Wrapped phosphor bronze (standard dimple) | Rolled strip + diamond dimples | CuSn8 · FB090 · QSn8-0.3 · C52100 | ★★★★ | ★★★ | ★★★★ | Low | General duty, periodic lubrication, medium load |
| Wrapped phosphor bronze (flanged, deep dimple) | Rolled + flange location | FB090F series | ★★★★★ | ★★★★ | ★★★★ | Medium | Heavy load / low speed, dirty environment, axial location |
| Wrapped phosphor bronze (through-hole) | Rolled + perforated (through holes) | FB092 series | ★★★★ | ★★★★ | ★★★★ | Medium | Centralised lubrication systems, large wheels/pulleys/idler rollers |
| Graphite-plugged self-lubricating | Base with graphite plugs/inserts | CuSn8+graphite · FB09G · JDB series | ★★★★ | ★★★★★ | ★★★★ | Med-high | Maintenance-free, hard-to-reach points, intermittent motion |
| PTFE composite | Surface coating / transfer layer | CuSn8 + PTFE | ★★★ | ★★★★★ | ★★★★★ | High | Corrosive environments, very low friction, lubrication-free |
| Cast tin bronze | Sand / centrifugal cast, thick wall | CuSn10P (C90700) · CuSn12 (CC483K) | ★★★★★ | ★★ | ★★★★ | High | Very heavy load, high impact, extreme duty |
| Aluminium bronze | Cast / forged | CuAl10Ni5Fe4 (C95800) · C95400 | ★★★★★ | ★★ | ★★★★★ (seawater) | High | Marine / offshore, salt spray, heavy load with impact |
| Sintered bronze | Powder metallurgy, oil-impregnated | SAE 841 class | ★★★ | ★★★★★ (oil-filled) | ★★★ | Low | Light-medium load, oil-filled self-lubrication, volume parts |
| Brass | Machined / extruded | CuZn series | ★★★ | ★★ | ★★ | Low | Low-cost, well-lubricated light-medium load points |
| Steel-backed bimetal | Steel shell + bronze layer | Steel + sintered CuSn layer | ★★★★★ | ★★★ | ★★★ | Medium | High-load thin wall, high rigidity, space-constrained |
| Machined oil-groove type | Machined grooves + forced lubrication | CuSn8 grooved | ★★★★ | ★★ | ★★★★ | Medium | High-speed continuous running, forced lubrication |
Source: Solutions Comparison sheet (8 CuSn8-based variants) + industry standard material families added (cast tin bronze, aluminium bronze, sintered bronze, brass, steel-backed bimetal are general-purpose grades, not directly from the source sheet).
2Industry Standard Material Data
Bearing bronze grades are covered by several standard systems. During design selection, note the grade mapping of the same material across systems, and verify each value against the specific standard revision in force.
2.1 Standard system cross-reference
| System | Representative standard | Scope |
|---|---|---|
| ISO (International) | ISO 3547 | Wrapped plain bearings (bushings / flanged bushes): dimensions and structure |
| DIN (Germany) | DIN 1494 · DIN 17662 | Wrapped bearing structure (1494); copper-tin-phosphorus strip CuSn8P 2.1030 (17662) |
| GB/T (China) | GB/T 5231 · GB/T 1176 · GB/T 23894-2009 | Wrought copper & copper alloy grades (5231); cast copper alloys (1176); plugged self-lubricating bushes JDB (23894) |
| EN (Europe) | EN 1652 · CEN/TS 13388 | Copper & copper alloy sheet/strip; grade system (e.g. CW453K = CuSn8) |
| ASTM / UNS / SAE (USA) | ASTM B103 · UNS C52100 · SAE J460 | Phosphor bronze strip (B103); oil-impregnated sintered bronze (SAE 841 class) |
| JIS (Japan) | JIS H 3100 etc. | Phosphor bronze sheet/strip (C5210) etc. |
2.2 Key grades and compositions
| Material | Representative grade | Main composition | Key mechanical / physical | Industry standard |
|---|---|---|---|---|
| Phosphor bronze (wrapped) | CuSn8 / CW453K / C52100 / QSn8-0.3 | Cu bal. · Sn 7.0–9.0% · P 0.03–0.35% | Tensile 390–450 MPa · Hardness 90–150 HBW | GB/T 5231 · EN 1652 · ASTM B103 |
| Cast tin bronze | CuSn10P / C90700 · CuSn12 / CC483K | Cu bal. · Sn 10% or 12% · P trace | Thick wall, high load capacity, impact resistant | GB/T 1176 · EN 1982 · UNS |
| Nickel aluminium bronze | CuAl10Ni5Fe4 / C95800 | Cu · Al 9–11% · Ni 4–5.5% · Fe 4–5.5% | Seawater resistant, high strength, erosion resistant | GB/T 1176 · ASTM B148 · EN CC334G |
| Aluminium bronze | C95400 (CuAl10Fe3) | Cu · Al 10–11.5% · Fe 3–5% | High strength, wear resistant, seawater tolerant | ASTM B148 · UNS |
| Sintered bronze | SAE 841 class (Fe-Cu-Sn, oil-impregnated) | Cu 87–90% · Sn 9–10% · graphite etc. | Oil-filled self-lubrication, porous structure | SAE J460 · ISO 5755 |
| Graphite-plugged aluminium bronze | QAl9-4 + graphite (JDB series) | Aluminium bronze base + solid lubricant plugs | Maintenance-free, heavy load / low speed | GB/T 23894-2009 |
| Brass | CuZn series (e.g. CuZn39Pb3) | Cu 58–63% · Zn bal. · Pb small amount | Easy to machine, low cost | EN 12163 · GB/T 5231 |
Allowable composition ranges for the same grade differ between standard systems (e.g. CuSn8 tin content: EN specifies 7.5–8.5%, while GB/T and some strip standards allow 7.0–9.0%). For cross-standard comparison, follow the standard version referenced in the final purchase contract.
3Material Characteristics & Application Points
| Material | Key characteristics | Main limitations | Typical application points |
|---|---|---|---|
| Wrapped phosphor bronze CuSn8 FB090 standard dimple |
Low cost, balanced load capacity and wear resistance; dimples retain grease and extend relubrication intervals; impact and vibration tolerant; easy installation (thin-walled rolled) | Requires periodic lubrication; reduced life in heavily contaminated environments; thin-wall load limit below cast parts | Forklift fork pivots, conveyor idler rollers, crane pulleys, AGV idler wheels — general heavy-load low-speed points |
| Wrapped flanged deep-dimple FB090F |
Flange provides axial location; deep dimples hold more grease; good tolerance of dirty environments; handles combined radial + axial load | Higher cost; larger envelope; not intended for high-speed running | Container hub bearing housings, crane travel wheels / boom pivots, axial-location points in heavy-duty wheel sets |
| Wrapped through-hole type FB092 |
Through holes deliver grease directly to the sliding surface; compatible with centralised lubrication; flushes contaminants and keeps the film fresh | Effective load area reduced by approx. 15–20%; outer side needs sealing protection | Large container equipment wheels, crane pulleys, conveyor idler rollers, mining rail wheels (centralised lubrication) |
| Graphite-plugged self-lubricating CuSn8+graphite / JDB |
Maintenance-free or low maintenance; good dry-start behaviour; high tolerance of lubrication failure; suits reciprocating / oscillating motion | Higher cost than standard type; slightly lower load rating than standard wrapped; graphite limited in strongly oxidising media | Forklift mast guides, chain conveyor sprockets, stacker fork extension shafts, hard-to-reach pivot points |
| PTFE composite CuSn8 + PTFE |
Very low friction; lubrication-free; strong corrosion resistance (chemical media) | Limited load capacity; high cost; restricted temperature range (PTFE limits) | Stacker guide roller sets, AGV steering pivots, precision guidance in corrosive environments |
| Cast tin bronze CuSn10P / CuSn12 |
Very high load capacity; robust thick-wall structure; impact resistant; complex shapes can be cast | High cost; forced lubrication usually required; long production lead time; heavy weight | Very heavy load / very low speed duty, gantry crane heavy pivots, heavy machinery bearing shells |
| Aluminium bronze CuAl10Ni5Fe4 / C95800 |
Strong seawater / salt-spray resistance; high strength and wear resistance; resistant to erosion and cavitation | Sensitive to shaft wear (hard shaft recommended); high cost; moderate machinability | Marine shafting, port machinery salt-spray points, marine propeller shaft bushes, heavy mining slide plates |
| Sintered bronze SAE 841 class |
Porous oil-filled self-lubrication; long maintenance-free intervals; low volume cost; suited to light-medium load / higher speed | Lower load capacity than solid copper alloys; oil content limited by porosity; dust can clog pores | Light-medium load higher-speed small bushings, appliance / automotive / office-equipment shafts, precision instruments |
| Brass CuZn series |
Easy machining, low cost, good thermal conductivity; stable friction when well lubricated | Moderate corrosion and wear resistance; lower strength than bronze; not for heavy impact | Low-speed well-lubricated points, guide sleeves, dowel pin bushes, low-cost pivots |
| Steel-backed bimetal Steel-backed bimetal |
Steel shell gives high rigidity; thin-wall high load; compact envelope | Steel shell can corrode in salt-spray environments; complex processing, higher cost | Engine bearing shells, high-load thin-wall space-constrained points, hydraulic pumps / motors |
| Machined oil-groove type Machined oil groove |
Grooves feed oil fully across the surface; good heat dissipation; suited to high-speed continuous running | Depends on a forced lubrication system; higher maintenance cost; fails without oil supply | High-speed continuous-running points, large slewing rings, oil-bath lubrication systems |
4Material Handling Equipment Application Matrix
The matrix below is derived from the source Applications and Fields sheet (26 application points), mapped to recommended material solutions.
| Equipment | Application point | Duty profile | Environment | Recommended solution | Key requirements |
|---|---|---|---|---|---|
| Container hub system | Hub bearing housing | Heavy load, low speed, frequent start-stop | Outdoor, dirty, corrosive | Flanged deep-dimple | Load, wear, corrosion resistance |
| Slewing support shaft | Heavy load, impact, vibration | Outdoor, dusty | Standard wrapped | Impact resistance, load capacity | |
| Fixed pivot pin | Static + occasional rotation | Outdoor, corrosive | Flanged wrapped | Corrosion resistance, low maintenance | |
| Electric forklift | Mast guide bearing | Medium load, reciprocating, guidance | Warehouse, clean | CuSn8 + graphite | Low friction, maintenance-free |
| Fork pivot bushing | Medium load, oscillation, impact | Warehouse, general | Standard wrapped | Load capacity, impact resistance | |
| Steering knuckle bushing | Medium load, frequent steering | Warehouse, clean | Thin-wall wrapped | Low friction, agile steering | |
| Lift cylinder guide sleeve | High load, reciprocating, precise | Warehouse, clean | Guide sleeve (wrapped) | Precise guidance, wear resistance | |
| Diesel forklift | Drive shaft bearing | Medium load, continuous rotation | Outdoor, high temp. | Standard wrapped | Heat tolerance, wear resistance |
| Rear axle bushing | Heavy load, impact, vibration | Outdoor, dirty | Thick-wall wrapped / cast | Impact resistance, high load | |
| Belt conveyor | Drum bearing housing | Light-medium load, continuous rotation | Workshop, dusty | Standard wrapped | Wear resistance, long life |
| Tension pulley bearing | Medium load, constant speed | Workshop, clean | Standard wrapped | Load capacity, stability | |
| Idler roller bearing | Light load, high-frequency rotation | Workshop, dusty | Thin-wall wrapped | Low friction, low cost | |
| Chain conveyor | Sprocket bearing | Medium load, impact, intermittent | Workshop, dirty | CuSn8 + graphite | Impact resistance, self-lubrication |
| Guide roller bushing | Light load, guidance | Workshop, general | Standard wrapped | Guidance accuracy, wear resistance | |
| Gantry / overhead crane | Boom pivot | Heavy load, oscillation, impact | Outdoor, corrosive | Flanged deep-dimple / aluminium bronze | High load, corrosion resistance |
| Pulley bearing | Medium load, continuous rotation | Outdoor, dusty | Standard wrapped | Wear resistance, reliability | |
| Travel wheel bearing | Heavy load, low speed, impact | Outdoor, rail | Flanged wrapped | High load, impact resistance | |
| Stacker / shuttle | Guide roller set | Medium load, rail guidance | Warehouse, rail | CuSn8 + PTFE | Low friction, guidance accuracy |
| Lift mechanism bearing | Medium load, reciprocating lift | Warehouse, clean | Guide sleeve | Precise guidance, load capacity | |
| Fork extension shaft | Medium load, reciprocating extension | Warehouse, general | CuSn8 + graphite | Low friction, self-lubrication | |
| AGV / AMR vehicles | Drive wheel bearing | Medium load, continuous rotation | Workshop, clean | Thin-wall wrapped | Low friction, long life |
| Idler wheel bearing | Light-medium load, passive rotation | Workshop, clean | Standard wrapped | Low friction, reliability | |
| Steering wheel pivot | Medium load, frequent steering | Workshop, clean | CuSn8 + PTFE | Low friction, responsiveness |
The source sheet focuses on material handling equipment; the same material system extends to other sectors: marine / port (salt-spray heavy load → aluminium bronze CuAl10Ni5Fe4 / C95800, graphite-plugged bushes), mining machinery (impact and dust → graphite slide plates, thick-wall tin bronze), food machinery (contact-compliance → lead-free copper alloy selection). Cross-industry selection must be verified against applicable standards (e.g. food contact FDA 21 CFR / EU 1935/2004).
5Quick Selection Decision Matrix
| Duty type | Load | Speed | Environment | Lubrication | Recommended solution | Not recommended | Key consideration |
|---|---|---|---|---|---|---|---|
| Heavy load + low speed | High | Low | Dirty | Periodic | ★ Flanged deep-dimple | Thin-wall wrapped | Grease retention and load capacity |
| Heavy load + low speed | High | Low | Corrosive | Maintenance-free | ★ PTFE composite / aluminium bronze | Thin-wall wrapped | Corrosion resistance and self-lubrication |
| Medium load + medium speed | Medium | Medium | General | Maintenance-free | ★ CuSn8 + graphite | Cast tin bronze | Balance of performance and maintenance |
| Medium load + medium speed | Medium | Medium | Clean | Periodic | ★ Standard wrapped | PTFE composite | Economy and reliability |
| Light load + high speed | Low | High | Clean | Oil-bath | ★ Machined oil groove / sintered bronze | Cast tin bronze | Low friction and heat dissipation |
| Very heavy load | Extreme | Very low | Extreme | Forced | ★ Cast tin bronze / steel-backed bimetal | Thin-wall wrapped | Maximum load capacity |
| Impact + vibration | High | Low-medium | Dirty | Periodic | ★ Flanged wrapped / thick-wall | Thin-wall wrapped | Impact resistance and structural strength |
| Precision guidance | Medium | Medium | Clean | Self-lubricating | ★ CuSn8 + graphite / PTFE | Cast tin bronze | Low friction and dimensional accuracy |
| Salt spray / marine | High | Low-medium | Seawater / salt spray | Per duty | ★ Aluminium bronze (C95800 etc.) | Plain wrapped phosphor bronze | Seawater resistance first; CuSn8 wrapped parts have limited salt-spray resistance |
6Data Sources & Review Notes
This report is based primarily on the 5 source sheets (Overview / Material Technical Data / Applications and Fields / Solutions Comparison / Maintenance Plan & Troubleshoot), with key parameters cross-checked against industry standards. Three data points deserve attention:
The source sheet rates CuSn8 seawater corrosion as “Excellent”; however, wrapped phosphor bronze has limited resistance to seawater / ammonia / strongly oxidising media and is not the first choice for continuous salt-spray duty. For marine / port heavy-load applications, aluminium bronze (CuAl10Ni5Fe4 / C95800) or a protective coating is recommended.
The source data is inconsistent at two points: Overview states −40 … +150 °C (with some cases at +300 °C), while Material Technical Data states −100 … +200 °C. Industry baseline for the base material is −100 … +200 °C; the actual operating range is limited by the lubricant type (grease-lubricated duty is typically −40 … +150 °C).
The source sheet lists dynamic load 40 N/mm² and static load 120 N/mm²; industry wrapped-bearing catalogues list dynamic ratings that vary by supplier and dimple design (40 up to approx. 100–120 N/mm²). Selection should treat the PV value (≤ 2.8 N/mm²·m/s, grease-lubricated) as the primary safety constraint and refer to the specific product catalogue.
Source maintenance recommendations (excerpt): visual inspection weekly, lubrication check monthly, wear measurement quarterly, temperature monitoring (normal running rise < 40 °C, stop immediately above 60 °C). Replacement thresholds: radial clearance ≥ 0.25 mm, wear depth ≥ 0.5 mm, surface roughness Ra > 12.5, vibration ≥ 7.1 mm/s. Full thresholds are given in the source Maintenance sheet.
Metal Bushing (Lubricated Metal) -Self-Lubricating Bushing Materials
Bushings are specialized, self-lubricating metal components widely utilized across various industries due to their durability and low maintenance requirements. Self-lubricating metal bushings are engineered to function without additional lubrication in numerous applications, thereby minimizing maintenance needs. These bushings are available in various series and configurations, such as flanged bushings and split bearings, to meet specific application requirements.
Metal-Polymer Anti-Friction Plain Bearings
Metal-Polymer Composite Self-lubricating Bushing Material
Steel Back + Porous Bronze Sinter + PTFE
