Mast Guide bearings are used for high radial and occaisonal thrust loads. They typically have a thick cross section on the outer race which performs as a wheel or tire. Several profiles are available to suit the application. They are mounted on the fork carriage and provide smooth action as the forks are raised or lowered.
Unit of Measure


N/A 2A

(d) Bore Diameter

N/A 30 mm1.1811 in

(D) Outer Diameter

N/A 3.1390 in

(W2) Inner Ring

N/A .6530 in

(W1) Outer Ring

N/A 1.1250 in

(R) Radius

N/A .1900 in
(r) Fillet1 N/A .0400 in

(C) Dynamic Load

N/A 27360 N6150 lb

(Co) Static Load

N/A 18860 N4240 lb
  • 1 Bearing corner radii will clear maximum fillet radius shown