SB-T90 | CuSn8 wrapped bronze bush with through holes, ISO3547 standard, metric size

SB-T90
Material Specifications

SB-T90
cylindrical bushings
Metric Sizes

SB-T90
flanged bushings
Metric Sizes

The bearings are wrapped from a cold formed homogenous bronze CuSn8 (alternative CuPb10Sn10) with
exceptional material properties. The standard sizes incorporate holes, which are dispersed in a special
way over the whole bearing surface. These holes serve as lubricant reservoirs to rapidly build up a
lubrication film at the start of movement and thereafter reduce the running friction. The material is suitable
for construction and agricultural machinery etc. where high load and slow movement occur.

Bronze alloy	Chemical Composition (%)	Type
CuSn8	Cu=91.3% Sn=8.5% P=0.2% Pb=0% Zn=0%	Lead Free
CuPb10Sn10	Cu=Balance. Sn= 9~11%, Pb=9~11%	With Lead

* Available bronze alloys used in this part:
BS 2874 PB104 / BS EN 12163 CW453K / NFL 14703 / ISO 427 DTD 265A / QQ B 750 D / SAE J 461 CA521 /
ASTM B 139 C52100 / ASTM B 103 C52100 / SAE J463 / DIN 17672 2.1030 / JIS H 3741 / SIS 14 54 31

Features

1. Easy of fitting and lubricate
2. High load capacity
3. Excellent wear resistance with lower friction
4. High level thermal conductivity
5. Minimum overall dimensions
6. Chemical resistance
7. Extended service life and lubrication intervals than normal SB-090 type bearings
8. Free selection of lubricants
9. Collection of dust and rub off particles in the holes. Initial pre-lubrication at assembly is required...

Typical Applications

This type of bushing is widely applied in hoisting machines and other construction machines, automobiles, tractors, trucks,
machines tools and some mineral engines.

This type of bushing is widely applied in hoisting machines and other construction machines, automobiles, tractors, trucks, machines tools and
some mineral engines. It can be fabricated into bushes, half bearings, flanged bushes, thrust washers, spherical bearing and so on.

Technical Data of SB-090 / SB-09G / SB-T90 / SB-T90S
Wrapped Bronze Bushing

Max.Loading	Static	120 N/mm²
Max.Loading	Dynamic load	40 N/mm²
Max.PV limit	Grease lubrication	2.8 N/mm²·m/s
Max.Speed	Grease lubrication	2.5 m/s
Match the axis	Hardness	≥ 50HRC
Match the axis	Roughness	Ra= 0.4 ~ 1.0
Friction Coefficient		0.05 ~ 0.25
Tensile strength		470 N/mm²
Yield Strength		280 N/mm²
Hardness		100~120 HB
Density		8.8 g/cm³
Temperature Range		-100℃ ~ +200℃
Thermal conductivity		58 W(m·k)﹣¹
Coefficient of thermal expansion		18.5×10^-6·K﹣¹
* Initial pre-lubrication at assembly is required.

Specifications of Through Holes for
SB-T90 Wrapped Bronze Bushing

Standard tolerance for SB-090 / SB-09G / SB-T90 / SB-T90S Wrapped Bronze Bushing
(As per to DIN 1494/ ISO3547)

Standard Dia.	O.D. Size	Housing Bore (H7)	I.D.Size after mounting (H9)	Matching Shaft Diameter (f7 to f8)
10~18	0.065	0.018	0.046	-0.016
10~18	0.03	0	0	-0.043
18~30	0.075	0.021	0.052	-0.02
18~30	0.035	0	0	-0.02
30~50	0.085	0.025	0.062	-0.025
30~50	0.045	0	0	-0.064
50~80	0.1	0.03	0.074	-0.03
50~80	0.055	0	0	-0.076
80~120	0.12	0.035	0.087	-0.036
80~120	0.07	0	0	-0.09
120~180	0.17	0.4	0.1	-0.043
120~180	0.1	0	0	-0.106
180~250	0.21	0.046	0.115	-0.05
180~250	0.13	0	0	-0.122
250~315	0.26	0.052	0.13	-0.056
250~315	0.17	0	0	-0.137

Other Wrapped Bronze Bushings


SB-09G	SB-090	SB-T90S	Heavy Duty Series (Customized on Request)

Gallery of Wrapped Bronze Bearings / Bushings / Thrust Washers


Wrapped bronze bushing CuSn8, 25x28x35 mm	Bronze bushing filled with graphites CuSn8, 30x34x25 mm	Wrapped bronze bushing CuSn8, 28x31x20 mm	Bronze Bearings made of CuSn8 with Lubrication Indents (MBZ-B09 Bushing)

Bronze Bearings and Bronze Sleeve Bushings made of CuSn8 with Lubrication Indents

Pressed Bronze Bearings CuSn8 with Lubrication Indents	Stamped Bronze Bearings CuSn8 with Oil Through Hole	Wrapped Bronze Bearings CuSn8 with Oil Through Hole	Wrapped Bronze Bearings CuSn8 with Lubrication Indents





Bronze Bearings and Bronze Sleeve Bushings made of CuSn8 with Lubrication Indents and Solid Lubricant Graphite

Bronze Bearings Made of CuSn8 Filled with Solid Lubricant Graphite	Bronze Bearings Made of CuSn10Pb10 Filled with Solid Lubricant Graphite	Bronze Bearings Made of CuSn8P Filled with Solid Lubricant Graphite	Bronze Bearings Made of CuSn6.5P Filled with Solid Lubricant Graphite

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