Design, Manufacture and Installation of Theatrical Equipment Worldwide

Universal Loft Block 55 / 56 / 59 Series

Universal Loft Block
Universal Loft Block
200-10856N25
56 series

  • 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" blocks have a 24" base angle with a continuous pattern of holes and slots for universal mounting for a grip range up to 20". 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.
  • A clip package is 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" 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" 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.

Ordering Information
Sheave
Diam.
  Lines   Bearings   Cast Iron
Prod. Code
  RWL   Wt.   Nylon
Prod. Code
  RWL   Wt.
Cable Blocks (1/4" (6.35 mm) cable)
8-1/2"
216 mm
  1   17mm BB   200-10855C25   500 lb
227 kg
  20 lb
9 kg
  200-10856N25   750 lb
340 kg
  15 lb
6.8 kg
8-1/2"
216 mm
  2   17mm 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   17mm TRB   200-10856C25T   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   17mm 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
8-1/2" Upright
216 mm
  10   1" TRB
25.4 mm
  200-100855C25   1300 lb
590 kg
  55 lb
25 kg
  -   1300 lb
590 kg
  33 lb
15 kg
8-1/2"Underhung
216 mm
  10   1" TRB
25.4 mm
  200-100859C25   1300 lb
590 kg
  55 lb
25 kg
  -   1300 lb
590 kg
  33 lb
15 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   17mm BB   -   -   -   200-10855N19   500 lb
317 kg
  15 lb
6.8 kg
8-1/2"
216 mm
  1   17mm TRB   -   -   -   200-10855N19T   500 lb
317 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.
 
7041 Interstate Island Road | Syracuse, NY USA 13209-9713 | Phone: 315-451-3440 | Toll Free: 800-836-1885
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