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SCREWRAIL® LINEAR ACTUATORS: END SUPPORTS

As an additional option for all Kerk® ScrewRails, standard End Supports offer the convenience of simple and compact mounting for the ScrewRail. The End Supports are designed to slide over the outside diameter of each end of the rail and “key” off the slot in the ScrewRail. The Kerkite® composite polymer End Supports come standard with three hex nuts that are captured in the flange for easy assembly. The End Supports are also supplied with a brass threaded insert and a set screw to fasten to the outside diameter of the rail.

With the End Supports, the Kerk ScrewRail can be easily mounted to your assembly. However, if the End Supports are not utilized it is recommended to center the clamping force on each end at the L3 dimension as shown in the drawing below.

 
SCREWRAIL: END SUPPORT STYLES
 
  A
Diam.
D F H
Diam.
L3 L4 Q R S T
(Hex Nut)
U W Diam.
(Brass
Insert)
X Y
in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm)
SR 04 .624/.626
(15.85/15.90)
1.35
(34.3)
0.200
(5.08)
0.150
(3.81)
0.390
(9.91)
.720
(18.29)
0.080
(2.03)
0.060
(1.52)
#6-32
(*)
1.03
(26.2)
#8-32 0.47
(12.0)
0.460
(11.68)
0.500
(12.70)
SR 06 .749/.751
(19.03/19.08)
1.60
(40.6)
0.250
(6.35)
0.173
(4.39)
0.603
(15.32)
0.900
(22.86)
0.100
(2.54)
0.100
(2.54)
#8-32
(*)
1.31
(33.3)
#10-32 0.60
(15.3)
0.594
(15.09)
0.645
(16.38)
SR 08 .999/1.001
25.38/25.43)
2.20
(55.9)
0.375
(9.53)
0.200
(5.08)
0.920
(23.37)
1.200
(30.48)
0.125
(3.18)
0.175
(4.45)
#10-32
(*)
1.82
(46.2)
#10-32 0.82
(20.9)
0.800
(20.32)
0.820
(20.83)

* metric available as requested

 

* ScrewRail® stiffness may be modeled using Classical Beam Deflection Theory with equivalent stainless steel beam of diameter given.

** Other leads available as custom orders.