Single flange wheels are suitable for use on underhung cranes and trolleys. The plain wheels may be used on light free running push cranes. For heavier service or longer spans, geared wheels should be used to drive the crane and keep it square on the runway.
The wheel treads are designed with the proper taper to operate on the lower flanges of standard beam sections. These wheels may be fitted with quill type roller bearings or ball bearings, either of which may be specified. Axle are machined all over, hollow bored for grease, and are fitted with a heavy nut. The axle collar has a milled cross flat which is to be set against a key or lug on the truck members to prevent the axle from turning or working loose.
Gears are of standard pitch with machine cut teeth. The pinion shaft is provided with a long keyway and spacing sleeve between the pinions for adjusting the width to fit various sizes of runway beam sections. This shaft is supported in plain journal bearings with holes for bolting to the truck members. The shaft extension is for coupling directly to a squaring shaft.
All bearings are provided with grease fittings for pressure lubrication.
The weights given below are for one pair of (two) wheels and the capacities are for each (one) wheel.
Horizontal dimensions given are for minimum, standard runway beams. If larger sections are used, add the difference in flange width to the dimension affected.
|3873||4||NON-GEARED||1,000||6"-12.5#||24||4||5 3/8||2 1/2||5||1|
|3875||5||NON-GEARED||1,500||7"-15.3#||39||5||6 1/2||3||6||1 1/4|
|3876||5||GEARED||1,500||7"-15.3#||2.5-1||52||5||6 1/2||3||6||5 1/2||9 7/8||9 1/4||4 5/8||1 3/16||1 1/4||4 3/8||1 3/16|
|3877||6||NON-GEARED||2,000||8"-18.4#||43||6||7 3/4||3 3/16||6 3/8||1 1/4|
|3878||6||GEARED||2,000||8"-18.4#||3-1||60||6||7 3/4||3 3/16||6 3/8||5 7/8||10 1/4||9 7/8||4 5/8||1 3/16||1 1/4||5||1 3/16|
|3879||8||NON-GEARED||3,200||10"-25.4#||78||8||9 3/4||3 21/32||7 5/16||1 1/2|
|3880||8||GEARED||3,200||10"-25.4#||3.17-1||78||8||9 3/4||3 21/32||7 5/16||6 7/8||12 1/2||11 1/4||5 7/8||1 7/16||1 1/2||6 1/4||1 5/8|
|Dimensions given are in round numbers. We reserve the right to make changes to our designs at any time that may not be reflected in the table. Please ask for a Certified Dimension Print for current dimensions.|
The sizes and capacities listed above are a reference to the most common sizes of this equipment. If you have a different capacity, irregular size or some other need that must be met by our equipment, we will be happy to design one of these pieces of equipment to meet your special needs while also meeting or exceeding our interpretation of the appropriate ANSI / ASME. standards.
Copyright © 2021 · All Rights Reserved · Downs Crane & Hoist Company, Inc.
Designers and manufactures of "Below the Hook" material handling equipment.