Red industrial wheel with a gear mechanism, showcasing engineering design and functionality.

Crosby McKissick Crown Blocks

SKU: GRRR417 Category: Blocks

Product details

McKissick® Roll-Forged sheaves with flame hardened grooves.
Double row pre-adjusted sealed tapered bearings mounted on a steel shaft.
Heavy center and side plates for proper support of center pin.
Pre-assembled units for rapid attachment to crown assembly for installation on derrick.
On multiple sheave assemblies, one sheave can be grooved for sand line on request.
Other sizes available upon request.
Sheaves manufactured to API-8C specifications.

Videos

Crown Blocks

Sheave Diameter (in)	Model No.	No. of Sheaves	Working Load Limit (short Tons)	Wire Rope Diameter (in)	Weight Each (lb)
						24	241	1	15	7/8	200
						24	242	2	30	7/8	278
						24	243	3	45	7/8	375
						24	731	1	35	1	200
						24	732	2	75	1	350
						24	733	3	100	1	525
						24	734	4	125	1	720
						30	741	1	40	1-1/8	325
						30	742	2	80	1-1/8	560
						30	743	3	110	1-1/8	800
						30	744	4	140	1-1/8	982
						30	745	5	170	1-1/8	1163

Sheave Diameter (mm)	Model No.	No. of Sheaves	Working Load Limit (t)	Wire Rope Diameter (mm)	Weight Each (kg)
						610	241	1	13.5	22	91
						610	242	2	27	22	126
						610	243	3	40.5	22	170
						610	731	1	31.5	25	91
						610	732	2	67.5	25	159
						610	733	3	90	25	238
						610	734	4	113	25	327
						762	741	1	36	28	147
						762	742	2	72	28	254
						762	743	3	99	28	363
						762	744	4	126	28	445
						762	745	5	153	28	528

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