Emerson Bearing - Mast Guide Ball Bearings

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.

Mast guide bearing with cross sectional view

Unit of Measure

Items	MG-205-FF Mast Guide Ball Bearings	MG-305-DD Mast Guide Ball Bearings	MG-305-DDB Mast Guide Ball Bearings	MG-305-DDE Mast Guide Ball Bearings	MG-305-DDA Mast Guide Ball Bearings
Style	N/A 1	N/A 1	N/A 1B	N/A 1	N/A 1
(d) Bore Diameter	N/A 25 mm0.9843 in	N/A 25 mm0.9843 in	N/A 25 mm0.9843 in	N/A 25 mm0.9843 in	N/A 1.0000 in
(D) Outer Diameter	N/A 2.5630 in	N/A 3.0000 in	N/A 3.0000 in	N/A 3.1320 in	N/A 2.9370 in
(W₂) Inner Ring	N/A .5890 in	N/A .6693 in17 mm	N/A .6693 in17 mm	N/A .6680 in	N/A .6693 in17 mm
(W₁) Outer Ring	N/A .8380 in	N/A 1.0000 in	N/A 1.0000 in	N/A .9450 in	N/A 1.0000 in
(R) Radius	N/A .2460 in	N/A .3000 in	N/A .2500 in	N/A .2360 in	N/A .3300 in
(r) Fillet¹	N/A .0590 in	N/A .0400 in	N/A .0400 in	N/A .0980 in	N/A .0400 in
(C) Dynamic Load	N/A 14010 N3150 lb	N/A 20510 N4610 lb	N/A 20510 N4610 lb	N/A 20510 N4610 lb	N/A 20510 N4610 lb
(Co) Static Load	N/A 7830 N1760 lb	N/A 11120 N2500 lb	N/A 11120 N2500 lb	N/A 11120 N2500 lb	N/A 11120 N2500 lb
¹ Bearing corner radii will clear maximum fillet radius shown