GGB-SZ bimetallic bearings available as lead-free cylindrical bearings & sliding plates

GGB-SZ CYLINDRICAL BUSHES

GGB-SZ Bimetal Lead-Free Plain Bearings

CHARACTERISTICS

  • Bimetal bearing with steel backing and bronze overlay
  • Lead-free bearing composition with indents as reservoir for the grease, also available without indents
  • High load capacity, very good resistance to fatigue strength at high temperatures
  • Suited to harsh operating conditions
  • Particularly suitable for high specific loads with oscillating motion and low frequency
  • Fine turned shafts suitable

availability

Bearing forms made to order : cylindrical bushes and sliding plates with non-standard dimensions, customized bearing designs

STRUCTURE AND COMPOSITION

  • Steel Back and Lead-free Composition

MICROSECTION

GGB-SZ Bearing Material Microsection

 

Sliding Layer:

CuSn8.5Bi7Zn2 
 

 

 

 

Steel Backing

OPERATING PERFORMANCE
Dry Poor
Oil lubricated Good
Grease lubricated Very Good
Water lubricated Poor
Process fluid lubricated Poor

GGB-SZ bearing material is known by various names such as SZ or GGB SZ. Buying a GGB-SZ bearing from GGB or its authorized distributors guarantees that you do not receive​ a counterfeit product. 

BEARING PROPERTIES

GENERAL   Unit Value
Maximum load, p

Static

Dynamic

N/mm2

N/mm2

300

140

Operating temperature

Min

Max greased

Max oil lubricated

°C

°C

°C

- 40

150

250

Oil Lubricated      
Maximum sliding speed, U   m/s

2.5

Maximum pU factor

 

N/mm2 x m/s

2.8

Coefficient of friction

Greased

Oil

 

0.05 - 0.12

0.04 - 0.12

RECOMMENDATIONS      
Shaft surface roughness, Ra

Normal

µm

≤ 0.8

Shaft surface hardness

Normal

For longer service life

HB

HB

> 200

> 350

 

STRUCTURE AND COMPOSITION

  • Steel Back and Lead-free Composition

MICROSECTION

GGB-SZ Bearing Material Microsection

Sliding Layer:

CuSn8.5Bi7Zn2 
 

 

 

 

Steel Backing

OPERATING PERFORMANCE
Dry Poor
Oil lubricated Good
Grease lubricated Very Good
Water lubricated Poor
Process fluid lubricated Poor

GGB-SZ bearing material is known by various names such as SZ or GGB SZ. Buying a GGB-SZ bearing from GGB or its authorized distributors guarantees that you do not receive​ a counterfeit product. 

BEARING PROPERTIES

GENERAL   Unit Value
Maximum load, p

Static

Dynamic

psi

psi

44 000

20 000

Operating temperature

Min

Max greased

Max oil lubricated

° F

° F

° F

- 40

300

480

OIL LUBRICATED      
Maximum sliding speed, U   fpm

500

Maximum pU factor

 

psi x fpm

80 000

Coefficient of friction

Greased

Oil

 

0.05 - 0.12

0.04 - 0.12

RECOMMENDATIONS      
Shaft surface roughness, Ra

Normal

µin

≤ 32

Shaft surface hardness

Normal

For longer service life

HB

HB

> 200

> 350

 
Part Finder

Part Finder

Search Now
GGB Webstore

GGB Webstore

Buy Now