Motion Without Limits®


Support Bushings - Low Profile Inch Version


DualVee Size


1 2 3 4 Part


Number 1, 3, 4, 5


1PWBC 1PWBX 2PWBC 2PWBX 3PWBC 3PWBX 4PWBC 4PWBX


4XL 4XLPWBC 4XLPWBX


Values are in inches Metric Version


DualVee Size


1 2 3 4 Part


Number 1, 3, 4, 5


M1PWBC M1PWBX M2PWBC M2PWBX M3PWBC M3PWBX M4PWBC M4PWBX


4XL M4XLPWBC M4XLPWBX


Values are in millimeters


Recommended Fastener Size


M4 M4 M6 M6 M8 M8


M10 M10 M14 M14


Hex Size


HS –


12 –


14 –


19 –


22 –


30


Offset EC


–


0.18 -


0.61 –


1.07 –


1.52 –


1.52


Head Height


HH6 2.11 2.64 3.48 3.10 5.10


Length Body


LB 7.6 10.8 15.6 18.8 25.1


Length Overall


LO 9.7


13.4 19.1 21.9 30.3


Outside Diameter


OD2 4.76 9.52 11.99 15.00 21.97 Inside


Diameter ID8


3.98 6.00 8.00 10.00 14.00 Head


Diameter HD


11.2 –


14.2 –


19.1 –


22.4 –


31.8 –


Recommended Fastener Size


M4 M4 1/4 1/4


5/16 5/16 3/8 3/8


9/16 9/16


Hex Size Offset Head


HS –


7/16 –


9/16 –


3/4 –


7/8 –


EC –


.007 –


.024 –


.042 –


.060 –


1 1/4 .060 .080 .100 .125 .125 .188


Height HH6


Length Body


LB .300 .425 .615 .740 .990


Length Overall


LO .380 .525 .740 .865 1.178


Outside Diameter


OD2 .1873 .3748 .4722 .5904 .8650 Inside


Diameter ID7


.157 .250 .3125 .375 .5625


Diameter Weight in Grams


Head


HD .44


–


.56 –


.75 –


.88 –


1.25 –


1.5 1.6 5.7 6.0


13.4 14.1 23.0 24.0 68.2 70.9


Concentric


Eccentric


Notes 1. Standard material is 303 stainless steel for low profile support bushings. 2. The bushing’s outside diameter is designed to fit the corresponding size DualVee guide wheel. Outside diameter (OD) tolerance is +.000, -.001inches or +0.00 mm, -0.03 mm.


3. Part # _PWBX indicates eccentric (adjustable) bushing; rotation of eccentric allows fit up adjustment between track and guide wheels. 4. All mounting information within this catalog assumes a central position of the eccentric bushing, thus allowing wheel position adjustment from “+EC” to “-EC”.


5. Part # _PWBC indicates concentric (stationary) bushing; Since concentrically mounted wheels have a fixed position, these bushings set the alignment of the carriage assembly to the rail. Concentrically mounted wheels should be configured to carry the majority of the load whenever possible.


6. Head height (HH) tolerance is ±.001 inches or ±0.03 mm. 7. Inside diameter (ID) tolerance is +.002 inches, -.001 inches, except for 1PWBC and 1PWBX, which have a tolerance of +.002 inches, -.000 inches. 8. Inside diameter (ID) tolerance is +0.05 mm, -0.025 mm metric, except for M1PWBC and M1PWBX, which have a tolerance of +0.05 mm, -0.00 mm.


15 © Bishop-Wisecarver Corporation 2011. All rights reserved. www.bwc.com 888.580.8272


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