Universal Loft Block - 55/56/59 Series

Overview

Key Benefits

• Benefit #1
• Benefit #2
• Benefit #3
• Benefit #4

Features

• May be mounted upright or underhung
• May be supported by I-beams, grid wells or Unistrut™
• Nylon or ASTM Class 30 grey iron sheaves are available. Nylon sheaves are quieter, have a higher capacity, lower weight and lower cost than blocks with cast iron sheaves.
• 8″ (203 mm) blocks have a 24″ (610 mm) base angle with a continuous pattern of holes and slots for universal mounting for a grip range up to 20″ (508 mm). Multi-line block base angles have a series of mounting holes.
• 8-Line blocks have the base angles turned in, requiring different upright and underhung models
• Clip package available for single line blocks with a combination of J-bolts and clips for both underhung, and upright mounting options
• Sealed precision ball bearings (Single line, 8″ [203 mm] nominal sheave only) or tapered roller bearings
• Side plates fully enclose sheave
• Five spacer between the side plates, three of which prevent cables from escaping the sheave grooves
• Pivot adapters (070-PIVOT) are available for single line 8″ (203 mm) blocks used in applications where the mounting surface is sloped
• Underhung loft blocks may need to be welded to loft beams after final alignment – consult the factory for specific information

Options

Sheave Diam.	Lines	Bearings	Cast Iron Prod. Code	RWL	Weight	Nylon Prod. Code	RWL	Weight
Cable Blocks (1/4″ [6.35 mm] cable)
8-1/2″ 216 mm	1	17 mm BB	200-10855C25	500 lb 227 kg	14 lb 9 kg	200-10856N25	750 lb 340 kg	15 lb 6.8 kg
8-1/2″ 216 mm	2	17 mm BB	200-20855C25	700 lb 317 kg	20 lb 9 kg	200-20855N25	750 lb 340 kg	16 lb 7.25 kg
8-1/2″ 216 mm	1	17 mm TRB	200-10855C25T	500 lb 227 kg	20 lb 9 kg	200-10856N25T	750 lb 340 kg	15 lb 6.8 kg
8-1/2″ 216 mm	2	17 mm TRB	200-20855C25T	700 lb 317 kg	20 lb 9 kg	200-20855N25T	750 lb 340 kg	16 lb 7.25 kg
8-1/2″ 216 mm	4	1″ TRB 25.4 mm	200-40855C25	1300 lb 590 kg	40 lb 18 kg	200-40855N25	1300 lb 590 kg	31 lb 14 kg
8-1/2″ Upright 216 mm	8	1″ TRB 25.4 mm	200-80855C25	1300 lb 590 kg	52 lb 23.5 kg	200-80855N25	1300 lb 590 kg	32 lb 14.5 kg
8-1/2″ Underhung 216 mm	8	1″ TRB 25.4 mm	200-80859C25	1300 lb 590 kg	52 lb 23.5 kg	200-80859N25	1300 lb 590 kg	32 lb 14.5 kg
12″* 305 mm	1	1″ TRB 25.4 mm	200-11255C25	700 lb 317 kg	50 lb 22.7 kg	–	–	–
12″ 305 mm	2	1″ TRB 25.4 mm	200-21255	1400 lb 634 kg	50 lb 22.7 kg	–	–	–
12″ Upright 305 mm	8	1″ TRB 25.4 mm	200-81255C25	3000 lb 1361 kg	74 lb 33.5 kg	–	–	–
12″ Underhung 305 mm	8	1″ TRB 25.4 mm	200-81259C25	2500 lb 1134 kg	74 lb 33.5 kg	–	–	–
16″+ 406 mm	1	1″ TRB 25.4 mm	200-11655S38	1400 lb 634 kg	110 lb 50 kg	–	–	–
Cable Blocks (3/16″ [4.76 mm] cable)
8-1/2″ 216 mm	1	17 mm BB	–	–	–	200-10855N19	500 lb 227 kg	15 lb 6.8 kg
8-1/2″ 216 mm	1	17 mm TRB	–	–	–	200-10855N19T	500 lb 227 kg	15 lb 6.8 kg
8-1/2″ 216 mm	8	1″ TRB 25.4 mm	–	–	–	200-80855N19	1300 lb 590 kg	28 lb 12.7 kg
8-1/2″ 216 mm	8	1″ TRB 25.4 mm	–	–	–	200-80859N19	1300 lb 590 kg	28 lb 12.7 kg
Rope Block (3/4″ (19 mm) rope)
8″ 203 mm	1	17mm BB	200-10855C75	300 lb 136 kg	20 lb 9 kg	200-10855N75	300 lb 136 kg	15 lb 6.8 kg
8″ 203 mm	1	17mm TRB	200-10855C75T	300 lb 136 kg	20 lb 9 kg	200-10855N75T	300 lb 136 kg	15 lb 6.8 kg

* Available for 1/4″ (6.35 mm) or 3/8″ (9.5 mm) cable, specify. (RWL for 1/4″ (6.35 mm) groove 700 lbs. (317 kg), for 3/8″ (9.5 mm) groove 1050 lbs. (476 kg)).

+ Steel sheave, available for 3/8″ (9.5 mm) or 1/2″ (12.7 mm) cable, specify.

RWL: RWL is maximum load that can be applied to a block which is in “like new” condition and has been properly installed, maintained and operated.