B.I.R.S. Machine & Supply is a distributor of CIP252B sheet, tube & machine components.
CIP252B is a proprietary material made specifically for marine environments. Typically used as propeller shaft and rudder bushings and is recommended in sand and silty environments. CIP252B is manufactured with polyester and PTFE combined textile and a high grade marine polyester resin with the solid lubrication additives PTFE and molybdenum disulfide (MoS2) evenly dispersed throughout the resin. This combination of resin reinforced with textile creates a dimensionally stable material ideal for replacing bronze in marine environments.
Negligible water swell
Suited for fresh or salt water environments
Low coefficient of friction
High edge and shock load capabilities
Low thermal expansion
Anisotropic Properties - Will Vary When Comparing Values Normal or Parallel to Laminate
Compressive Strength, Breaking – ASTM D695 - Normal to Laminate = 50,000 PSI
Compressive Strength, Breaking – ASTM D695 - Parallel to Laminate = 13,500 PSI
CLTE Will Also Vary Based on Laminate Orientation
Not Intended for High Speed Bearing Applications, Ideal for High Load & Slow Rotating Speed
CIP252 offers a low maintenance and cost effective solution for eliminating external lubrication without compromising performance.
Rig Walker Wear Pads
Linear Motion Wear Pads
propeller shaft Bushing
Thickness .125" to 6.000"
Standard Widths 16.000", 24.000" & 32.000"
Standard Lengths 24.000", 36.000", 48.000" & 50.000"
Maximum Outside Diameter 65.000"
Minimum Inside Diameter 0.500"
Standard Lengths 16.000", 24.000" & 32.000"
B.I.R.S. Machine & Supply
12 Buckelew Bridge Road
Anniston, Alabama 36207
P: (256) 405-5370
F: (256) 831-9057
We are located in east Alabama just off interstate I20 between Atlanta, Georgia and Birmingham, Alabama.