Part Number b (mm) b1 (mm) b2 (mm) h (mm) h tol. (mm) s (mm) c (mm) r2 (mm) Wx (cm3) Wt (kg/m) Wt (lb/ft)
3018 98 14 70 65 +/-1 9 15 10° 19.4 70 13
3019 113.9 18 77.9 66 +/-1 11 15 10° 102 25.3 17
3275 129.6 20.5 88.6 72 +/-1.25 12 15 10° 143 31.2 21
3020 129.6 18.96 88.6 81 +/-1.25 12 15 10° 160 34 22.9
3440 139.7 18.9 101.9 69.9 +/-1.6 12.7 * 156.6 31 20.8
3100 152.4 22 108.4 83 +/-1 14 20 12° 220 40.8 27.4
3353 175 25.6 123.8 90 +/-1.3 15 20 322 51.4 34.6
Symbol Definition
d 3mm
r1 91°+1°
b1 tolerance +/- 0.5mm
b2 tolerance +1mm (except 3440 -0.8, 3100, 3353 - +/-0.5)
s tolerance +/- 0.5mm

Guide Rail Profiles are typically sold 'cut-to-length'