Model No. Stroke
(stroke between 
mechanical stoppers)
Outer rail 
length
Overall 
length

L1
Detail 
specifications
CAD Dimensional
drawing
Type A Type B Type C Type D 2D (DXF) 3D
mm mm mm mm mm mm
SKR33□□C-0070/D-0020 with a Cover 70(80.5) 20(30) 150 220
SKR33□□C-0120/D-0070 with a Cover 120(130.5) 70(80) 200 270
SKR33□□C-0220/D-0170 with a Cover 220(230.5) 170(180) 300 370
SKR33□□C-0320/D-0270 with a Cover 320(330.5) 270(280) 400 470
SKR33□□C-0420/D-0370 with a Cover 420(430.5) 370(380) 500 570
SKR33□□C-0520/D-0470 with a Cover 520(530.5) 470(480) 600 670
SKR33□□C-0620/D-0570 with a Cover 620(630.5) 570(580) 700 770