Ball Bearing Ratchet Block with Compression Sheave
Multiple gripping faces machined into our ratchet block sheaves work in conjunction with our unique cross-hole geometry, delivering up to 20:1 holding power to resist slipping of the loaded line while minimising rope wear. Ball bearings ensure minimum friction under load and a free running sheave when the ratchet is disengaged.
Control switches are located on both sides of the block to remain accessible wherever the block is fitted. In auto mode, the ratchet mechanism engages when load is applied but disengages when released to let the sheet run out freely – ideal for gybing asymmetric spinnakers. In manual mode, the switch is used to set up the block with ratchet either on or off as required.
Anatomy of an Orbit Winch™
1.
QuickTrim™ patented self-tailing feature for rapid sail trim and smooth adjustment.
2.
Simple disassembling and servicing.
3.
Low line entry due to gearing configuration.
4.
High strength aluminium bronze forged gears.
5.
Power Rib™ ensures a controlled grip at all times, whether trimming or easing.
6.
Ball bearings carry the thrust loads, roller bearings carry the radial loads of the drum to minimise rotational friction.
7.
Light weight aluminium stem and drum.
8.
Optional 3-speed configuration in the larger sizes provides impressively fast line speed in first gear.
Features
- Patent pending innovative Compression Sheave provides high holding power without abrasive rope contact.
- Smooth sheave profile reduces rope wear and line vibration.
- Precise release improves trimming and easing under load.
- Proven ratchet mechanism delivers powerful holding performance with reduced effort.
- Lightweight, high-strength construction for demanding sailing applications.
- Swivel shackle head allows unrestricted rotation.
- Available with Dyneema® link head.
- Automatic and manual ratchet versions.
- Suits 5-10mm diam. lines
- MWL 250kg (550lb), BL 650kg (1430lb).
BEARING SYSTEM
Low-friction, high compression strength ball bearing system provides smooth, efficient operation across a wide load range.
MATERIALS
· Sheave: Anodised aluminium.
· Swivel shackle head fitting: Grade 316 stainless steel.
· Ball bearings: High compression strength acetal.
· Frame/cheeks: Toughened, glass fibre reinforced nylon.
· Soft link: UV stabilised, multi-strand SK78 Dyneema®.
SPECIFICATIONS
MWL 250kg (550lb).
BL 650kg (1430lb).
NO TOOLS REQUIRED
Full disassembly and reassembly can conveniently be performed without the need for any tools for sizes 20ST, 30QT, and 40QT.
To remove the drum, pull back the spring-loaded release latch and a slight anti-clockwise rotation will allow the self-tailing arm to be lifted from the winch. From there, the drum can be removed from the winch centre stem.
When completing reassembly in reverse order, an audible click confirms positive engagement between the self-tailing arm and bayonet notches on the centre stem. These notches allow the self-tailing arm to be locked in one of 8 positions at rotational increments of 45 degrees.
ELECTRIFY YOUR ORBIT WINCH™ EXPERIENCE
Orbit Winches™ are now available with either an E1 Single Speed Electric Motor for sizes 30QT and 40QT, or E2+ Two- and Three-Speed electric drive, offering greater control, higher line speeds and increased versatility for keelboats large and small.
Designed for confident short-handed sailing, the electric Orbit Winches™ combine manual and electric operation with integrated intelligence and protection. The electric motor features an integrated control box and illuminated push buttons, providing overload, thermal overload, low-voltage, accidental start and reverse polarity protection, with clear status feedback. Three-speed models add a mechanically activated high-speed ratio for rapid line recovery when required. At the core is a high-quality, European engineered and manufactured series-wound motor, matched to an optimised gearbox for efficient pulling power and smooth, controlled line speed.
Available in sizes 30QT to 50QT, with one-, two- and three-speed configurations in 12V or 24V versions.
E1 & E2+ ELECTRIC POWER KITS
All Orbit Winches™ size 30QT to 50QT can be easily converted to electric with an Electric Power Kit for either 12V or 24V systems. The Power Kit includes the Electric Motor unit, input/output cable from motor, illuminated push button(s), and a mounting deck plate. Marine grade circuit breakers are also available for protection and isolation.
Orbit Winch™ Products
