91SeriesHeavy Duty Kingpinless Casters

CasterHQ · 3" wide · zinc, forged steel

3 inch wide heavy duty kingpinless on a 4-1/2 x 6-1/4 plate. Up to 6,000 lb.

Wheel sizes
6, 8, 10, 12"
Per caster
750–6,000 lb
Overall height
7-1/2 to 13-1/2"
Top plate (in.)
4-1/2 x 6-1/4
Finish
Zinc, forged steel

Sold as Swivel, face-contact brake, rigid. Top plate mount.

91 Series Heavy Duty Kingpinless Casters

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Wheel size

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    Questions, answered with the numbers.

    The 91 Series is CasterHQ's 3 in. wide heavy duty kingpinless caster on a 4-1/2 x 6-1/4 in. top plate (bolt spacing 2-7/16 x 4-15/16 to 3-3/8 x 5-1/4 in., 1/2 in. bolts). Wheels of 6, 8, 10 and 12 in. carry 750 to 6,000 lb per caster on a 3/4 in. axle with 1 in. roller bearings. Sold as swivel, swivel with face-contact brake or rigid, in eight wheel materials for heavy frames, dies, tow lines and platform trucks.

    What is a 91 Series caster?

    The 91 Series is CasterHQ's heavy duty kingpinless caster: 3 in. wide wheels in 6, 8, 10 and 12 in. diameters, rated 750 to 6,000 lb per caster. 3 inch wide heavy duty kingpinless on a 4-1/2 x 6-1/4 plate. Up to 6,000 lb. Sold as swivel, face-contact brake and rigid. Top plate 4-1/2 x 6-1/4 in. Finish: zinc, forged steel.

    What plate size and bolt pattern does the 91 Series use?

    The 91 Series mounts on one plate size. 4-1/2 x 6-1/4 in. plate: bolt hole spacing 2-7/16 x 4-15/16 to 3-3/8 x 5-1/4 in., 1/2 in. bolts. The holes are slotted, so measure your old plate center to center and match the spacing, not just the plate outline.

    How much weight can a 91 Series caster carry?

    750 to 6,000 lb per caster, depending on wheel diameter and material. By wheel size: 6 in. wheels 750 to 6,000 lb; 8 in. wheels 900 to 6,000 lb; 10 in. wheels 1,100 to 6,000 lb; 12 in. wheels 1,300 to 6,000 lb. To size a cart, divide the total weight (cart plus load) by one less than the number of casters, then choose a caster rated at or above that figure.

    How tall is a 91 Series caster?

    Overall height, floor to top of plate: 6 in. wheel 7-1/2 in.; 8 in. wheel 10-1/8 in.; 10 in. wheel 11-1/2 in.; 12 in. wheel 13-1/2 in.

    Which wheel materials come in the 91 Series?

    8 wheel materials: Mold-on rubber tread on steel core; Phenolic resin; Polyurethane tread on steel core; Polyurethane tread on glass-filled nylon core; Heavy-duty polyurethane tread on steel core; Ductile steel; Semi-steel (cast iron); V-groove semi-steel for inverted angle track. Every material is a separate listing with its own photo, capacity and price.

    Does the 91 Series come with a brake?

    Yes. Swivel 91 Series casters are available with a face-contact brake, a foot-operated brake that presses a pad against the wheel face. Rigid casters have no brake.

    What is the swivel radius, axle size and bearing of the 91 Series?

    Swivel radius: 6 in. wheel 4-5/16 in.; 8 in. wheel 6-3/8 in.; 10 in. wheel 7-9/16 in.; 12 in. wheel 9-1/16 in. Axle diameter 3/4 in. Bearings: 1 in. roller with spanner bushing.

    What warranty does the 91 Series carry?

    91 Series casters carry a 3 years warranty against defects in materials and workmanship from the date of purchase. Normal wear, overloading, misuse and improper installation are not covered. Returns are accepted within 30 days of delivery.

    What is the difference between the 91 Series and the 92 Series?

    Compared with the 91 Series, the 92 Series is the same 3 in. wide kingpinless caster on a larger 5-1/4 x 7-1/4 in. plate, for frames with a bigger bolt pattern.