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NPB 12FNU08 Bearing Inch Series | Self-Lubricating Bearing

NPB Part No.

12FNU08

Specifications

Inch or Metric

Inch

Lubrication

Self-lubricating

Bearing Length

1/2"

Nominal Bearing Bore

3/4"

Recommended Shaft Diameter

.7500 - .7488"

Recommended Housing Diameter

.8747 - .8755"

Installed Bearing Inside Diam.*  ^ID

.7502 - .7534"

Flanged

Yes

Nominal Flange OD

1 1/8

Flange Thickness

.068 - .060

Materials

• Liner: PTFE-lead overlay
• Substrate: Sintered bronze
• Backing: Plated low-carbon steel

Loads - P

• Dynamic loads up to 20,000 PSI
• Static loads up to 36,000 PSI
• Compressive yield strength of 44,000 PSI

Speed - V

• Up to 1000 FPM unlubricated
• Up to 2000 FPM lubricated

Performance - PV

• PV to 50,000 PSI - FPM - continuous operation
• PV to 100,000 PSI - FPM - intermittent operation

Temperature Range

–328°F to +536°F

Coefficient of Friction

0.02 - 0.20 Static/Dynamic

Shaft Finish

• A surface finish of better than 16 micro inches is recommended
• Above 32 micro inches, bearing life is reduced by more than 50%

Interchange

National Precision Bearing Part No 12FNU08 is an interchangable replacement for these common bearing part numbers:

Isostatic Bearing

12FTU08

Garlock Bearing

12FDU08