XC Advanced Anti-Backlash

XC Advanced Anti-Backlash

Thomson BSA's XC series of lead screw nuts has the best anti-backlash technology, using a stainless steel cam (ActiveCAM®) to create a solid bias between the nut halves. A torsional spring maintains the tension between the parts, while still having low torque and drag. The ActiveCAM® design results in the stiffest assembly possible using polymer lead screw nuts. Every movement with XC series lead screw nuts is exact and repeatable. This provides a light- and medium-duty anti-backlash screw that rivals ball screws for precision.

Imperial Availability

Model Dia.
(in)		 Lead (inch, unless otherwise noted)
.050 .0625 .063 2
mm		 .083 .100 .125 4
mm		 .167 .200 .250 .375 .500 .800 1.00 2.00
XCM1800
XC2500		 3/16 X  
1/4 X X X X  
XC3700  5/16 X X X X  
3/8 X X X X X X X X X X     
XC5000  7/16 X X X  
1/2 X X X X X X X  
XC6200 5/8 X X X X X X  
XC7500  3/4 X X X X X X X
XC10000 1 X X X X X X  

V-Thread Availability Only

Model Dia. Lead (inch, unless otherwise noted)
.0125 .0208 .0250 .0278 .0313 .0357 1 mm .0417
XCM1800
XC2500		 6 mm          X
1/4 in X X X X X X      X

Metric Availability

Model Dia.
(mm)		 Lead (mm)
2 3 4 5 6 8 10 12 15 16 20 25 35 45
XC3700 10 X X X X X X X
XC5000 12 X X X X X X X X
XC6200 16 X X X X X X
XC7500 20 X X X X X X
XC10000 24 X

XC Advanced Anti-Backlash Highlights

  • Most advanced Anti-Backlash nut design
  • ActiveCAM® automatically adjusts for wear insuring zero backlash for the life of the nut  
  • High axial stiffness, zero backlash, minimum drag torque
  • Less susceptible to particulate contamination compared to ball scews