product
mouseover to enlarge
57 mm Aluminum ESP Block — Lockoff 57 mm Aluminum ESP Block — Lockoff 57 mm Aluminum ESP Block — Lockoff 57 mm Aluminum ESP Block — Lockoff
click thumbnail to select

57 mm Aluminum ESP Block — Lockoff

Part No. 6077
£149.36(including VAT)  Not in Stock
Sheave Ø (mm)57 mm
Maximum line Ø (mm)16 mm
Maximum working load (kg)1000 kg

Cruising ESP blocks complement our existing blocks in looks and function, but are simpler in design and construction. Sheaves feature sleeve bearings to handle high static loads and are ideal for halyards or limited purchase systems on cruising boats.

FootnoteIf double stacked, upper block/organizer is two-thirds of listed MWL and breaking load. 
Sheave Ø (mm)57 mm
Length (mm)99 mm
Weight (g)226 g
Maximum line Ø (mm)16 mm
Maximum working load (kg)1000 kg
Breaking load (kg)2000 kg
Maximum lockoff load (kg)550 kg
Fasteners (mm)8 FH mm
A (mm)13 mm
B (mm)55 mm
C (mm)51 mm
D (mm)14 mm
E (mm)57 mm
F (mm)96 mm
Manual: 4638.pdf (open/save)
DWG: 6077.dwg (open/save)
DXF: 6077.dxf (open/save)
IGS: 6077.igs (open/save)
EPS: 6077.eps (open/save)
High-res JPG: 6077.jpg (open/save)

DO NOT use Harken equipment for human suspension unless product is specifically certified and labeled for such use.

  • United States
  • Australia
  • France
  • Italia
  • New Zealand
  • Polska
  • Sverige
  • UK