Ordering Instructions

BLOCKS

The following instructions should be specified:

1. Stock number (if known).
2. Sheave Size.
3. Block Number (Catalog Number).
4. Number of Sheaves.
5. Type of Bearing: (BB) Bronze Bushed, (RB) Roller, (TB) Tapered Roller.
6. Type of Hook or Shackle.
7. Wire Rope Diameter.

All crane and some construction blocks are available as shown or with swivel shackle assembly, duplex swivel hook assembly or quadruple hook assembly (as illustrated on Page 171). Various combinations of bearing assemblies can be furnished; such as bronze bushed sheaves and swivel hooks, roller or tapered roller bearing sheaves and hook assemblies or a combination of bronze, roller or tapered roller bearings.

EXAMPLE:
18" 370 Triple Sheave, Roller Bearing Trunnion Style Crane Block with Roller Bearing Swivel Hook, 60 ton 1" Wire Rope Diameter.

SHEAVES

The following information should be specified:

1. Stock number (if known).
2. Sheave O.D.
3. Bearing Type or Plain Bore.
4. Shaft or Bore Size.
5. Hub Width.
6. Rim Width.
7. Wire Rope Size.
8. Special Machine Features.
9. Special Finishes.

Alemite lubrication through the hub of the sheaves can be installed on special order.

If hub or rim dimensions necessitate a dimension other than those shown in this catalog please contact: The Crosby Group, Inc. for minimums and maximums. Tapered roller bearing sheaves show width over bearing cones, which cannot be altered.

Price and delivery for your special needs, if not shown, are available upon request.

Please Contact: