Heavy-duty pulley block with hook, labeled Crosby Western Tulsa, Okla, wooden frame, metal components.

Crosby HS-21B Single Sheave Regular Wood Blocks for Manila Rope

SKU: GRRR193 Category: Blocks

Product details

Hot-dip galvanized for corrosion resistance.
Grade 5 bolts secured with lock washers and staked nuts.
Bronze bushed sheaves with large bearing diameter for extended block life.
Beckets furnished on all blocks.
Meets or exceeds all requirements of ASME B30.26. Importantly, these blocks meet other critical performance requirements including fatigue life, impact properties and material traceability, not addressed by ASME B30.26.
Fitting Type: HS-Latch Hook; N-Swivel Hook with Latch; S- Round Pin Anchor Shackle

Videos

HS-21B Single Sheave Regular Wood Blocks for Manila Rope

Block Size (in)	Sheave Diameter	Manila Rope Size (in)	Working Load Limit (lb)			Weight Each (lb)
			21 Single	22 Double	23 Triple	21 Single	22 Double	23 Triple
									4	2.25		1000	1000	1000	1.75	1.75	1.75
									5	3.00		1200	1200	1200	3.25	3.25	3.25
									6	3.50		1800	1800	1800	5.00	5.00	5.00
									8	4.75		2800	2800	2800	13.00	13.00	13.00
									4	2.25		1000	1000	1000	1.75	1.75	1.75
									5	3.00		1200	1200	1200	3.25	3.25	3.25
									6	3.50		1800	1800	1800	5.00	5.00	5.00
									8	4.75		2800	2800	2800	13.00	13.00	13.00
									4	2.25		1000	1000	1000	1.75	1.75	1.75
									5	3.00		1200	1200	1200	3.25	3.25	3.25
									6	3.50		1800	1800	1800	5.00	5.00	5.00
									8	4.75		2800	2800	2800	13.00	13.00	13.00

Block Size (in)	Sheave Diameter	Manila Rope Size (mm)	Working Load Limit (t)			Weight Each (kg)
			21 Single	22 Double	23 Triple	21 Single	22 Double	23 Triple
									4	57.0	13	.45	.45	.45	.79	.79	.79
									5	76.0	16	.54	.54	.54	1.47	1.47	1.47
									6	89.0	19	.82	.82	.82	2.27	2.27	2.27
									8	121	22-26	1.27	1.27	1.27	5.90	5.90	5.90
									4	57.0	13	.45	.45	.45	.79	.79	.79
									5	76.0	16	.54	.54	.54	1.47	1.47	1.47
									6	89.0	19	.82	.82	.82	2.27	2.27	2.27
									8	121	22-26	1.27	1.27	1.27	5.90	5.90	5.90
									4	57.0	13	.45	.45	.45	.79	.79	.79
									5	76.0	16	.54	.54	.54	1.47	1.47	1.47
									6	89.0	19	.82	.82	.82	2.27	2.27	2.27
									8	121	22-26	1.27	1.27	1.27	5.90	5.90	5.90

4:1 Design Factor.

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