A range Heavy Duty, Lightweight snatch blocks for rigging, construction, oilfield and marine operations. These blocks are of proven and trusted design, and include R clip hinge pin retention (as specified by many oilfield production companies).
Capacities form 2 tonnes to 30 tonnes
Groove option from 7mm to 30mm
Sheave diameters from 3 inches (75mm) to 20 inches (508mm)
Shackle or eye hook on head fitting Bronze bush or taper roller bearings on sheaves
Steel side plates and sheaves.
Hardened steel sheave and load pins.
Galvanised Safety bow shackle (RR-C-271D) on head
Or Forged alloy heat treated sling hook with latch.
Plain swivel on head for 360 degrees rotation
180 degree plus pivot on head
Captured load pin with knurled release knob and R clip safety retaining pin. Grease nipple and grease-way on sheave pin.
Can be fitted to tensioned rope (no access To rope termination required)
Bronze bush or H.D. Taper roller bearings on sheave.
Factor of safety 4:1
Test plate marked with SWL in head, line pull, FOS and
Unique serial number.
CE marked (SI1992: 3073) and tested LOLER (SI1998: 2307)
Finished polyurethane reinforced enamel, colour red.
Dimensions & Weights | |||||||
SWL on Head | Line Pull | Sheave | Groove to suit | Sheave | Head fitting | ||
FOS 4 | FOS4 | diameter | rope dia. range | mounted on | type | ||
2t | 1t | (76mm) | 7 to 9mm | Bronze bush | Inverted shackle | ||
4t | 2t | (114mm) | 10 to 14mm | Bronze bush | Inverted shackle | ||
4t | 2t | (152mm) | 13 to 16mm | Bronze bush | Inverted shackle | ||
8t | 4t | (152mm) | 20 to 22mm | Bronze bush | Inverted shackle | ||
8t | 4t | (203mm) | 20 to 24mm | Roller bearings | Inverted shackle | ||
12t | 6t | (305mm) | 24 to 26mm | Roller bearings | Inverted shackle | ||
15t | 7.5t | (305mm) | 24 to 28mm | Roller bearings | Inverted shackle | ||
20t | 11t | (406mm) | 30 to 32mm | Roller bearings | Inverted shackle | ||
30t | 15t | (406mm) | 32 to 36mm | Roller bearings | Inverted shackle | ||
30t | 15t | (508mm) | 32 to 36mm | Roller bearings | Inverted shackle | ||
8t | 4t | (203mm) | 20 to 24mm | Roller bearings | Safety hook | ||
12t | 6t | (305mm) | 24 to 28mm | Roller bearings | Safety hook |
Specifications | ||||||
A | B | C | D | E | F | Wt kgs |
330 | 160 | 83 | 82 | 70 | 27 | 3.5 |
340 | 245 | 100 | 120 | 69 | 32 | 6 |
385 | 300 | 135 | 155 | 70 | 34 | 8 |
450 | 342 | 145 | 160 | 93 | 49 | 14 |
495 | 390 | 173 | 206 | 93 | 47 | 18 |
730 | 580 | 260 | 310 | 123 | 65 | 54 |
750 | 575 | 270 | 310 | 127 | 66 | 57 |
970 | 770 | 345 | 398 | 73 | 62 | 120 |
1070 | 800 | 355 | 410 | 73 | 62 | 162 |
1080 | 920 | 400 | 510 | 73 | 62 | 300 |
500 | n/a | 173 | 206 | 93 | 47 | 18 |
730 | n/a | 260 | 310 | 123 | 65 | 55 |
NOTE: Maximum specified rope diameter must not be exceeded (advise of greater rope diameters). Smaller rope diameters may be fitted on temporary rigging, but sheave life may be affected (advise where longer term installations are required with smaller rope diameters).