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Midrange Blocks > Midrange

Midrange blocks' robust construction makes them ideal for medium and large offshore boats. The 3.00" (76 mm) diameter ball bearing sheave accepts ⁹/₁₆" (14 mm) line and has a working load of 1800 Ibs (816 kg). High-load Midrange blocks use Torlon^® balls and have a working load of 2300 Ibs (1043 kg).

Use for:

Control lines

1540 1542 1586 1588

Strap goes around head for high loads Three-way head system Accepts 9/18" (14 mm) line Ball bearings ride in fitted races for high-load efficiency Wide sheaves Aluminum sheave versions accept wire

1541 1587

1544

1545

1546

1548

Part No.	Description	Sheave		Length		Weight		Max line		Shackle pin		Safe working load		Breaking strength
		in	mm	in	mm	oz	g	in	mm	in	mm	Ib	kg	Ib	kg
1540	Single	3	76	61/8	156	13	367	9/16	14	5/16	8	1800	816	5000	2268
1541	Single/ becket	3	76	71/8	184	14	397	9/16	14	V16	8	1800	816	5000	2268
1542	Single/ aluminum sheave	3	76	61/8	156	15	425	9/16	14	5/16	8	1800	816	5000	2268
1544	Double	3	76	71/2	191	251/2	723	9/16	14	5/16	8	2800	1270	7000	3175
1545	Double/ becket	3	76	81/2	216	261/2	751	9/16	14	5/16	8	2800	1270	7000	3175
1546	Triple	3	76	73/4	197	36	1.02	9/16	14	5/16	8	3800	1724	8500	3856
1548	Cheek *	3	76	43/8	111	11	312	9/16	14	——	—	1500	680	4200	1905
1586	Single/ high-load	3	76	61/8	156	13	367	9/16	14	5/16	8	2300	1043	5000	2268
1587	Single/ high-load/ becket	3	76	71/8	184	14	397	9/16	14	5/16	8	2300	1043	5000	2268
1588	Single/ high-load/ aluminum sheave	3	76	61/8	156	15	425	9/16	14	5/16	8	2300	1043	5000	2268

* - ¹/₄" (6 mm) RH fasteners

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