Ronstan is a renowned
pulley manufacturer that offers quality of all its components. The pulleys offer very little friction and high loads. Core Blocks™ are
a true all round solution. A tuned 2-stage bearing system provides excellent
performance across the full working load range
with an integrated thrust bearing feature and the resilience to handle high dynamic
or static loads. Acetal sheave, alloy cheeks and stainless steel fixings
complete the durable package. For reliability and a long service life, these
blocks are the right choice for sheets, halyards and control line applications
for cruising and racing. These pulleys are not initially designed to bear human
weight. Use with caution and with approval from a professional.
The advantage of Universal Bearing
·
Dynamic and high static
load performance
·
The Ronstan Universal Bearing
incorporates our proven 2-stage bearing system
o Stage 1 - Under moderate loads, Acetal ball bearings ensure minimum
friction.
o Stage 2 - Under heavy loads, where deformation of ball bearings alone
would result in increased friction, a sliding Acetal bearing on a polished
stainless steel race takes over, and maintaining low friction performance.
·
Additionally the ball
bearings are configured to act as a thrust bearing between the sheave and cheeks,
preventing the sheave from rubbing on the cheeks and causing friction when the
line lead in and out of the block isn’t perfect. It is particularly important
for cheek blocks.
Features
·
Class leading performance
and sleek, contemporary styling
·
Excellent dynamic and high
static load performance
·
Less than half the friction
of the nearest competitor
·
Durable aluminum alloy
cheek plates
·
Central hub hole can be
used as a Becket take-off or tie-up point
·
Universal head with full
3-axis articulation
·
Head posts can be locked at
0 or 90 degrees, by using a 2.5mm Hex/Allen Key
·
Alloy Rope/Wire sheave
version also available
Technical specifications
·
Sheave: 2.95 in. (75 mm)
·
Max Rope: 0.55 in. (14 mm)
·
Max Cable: 0.3 in. (8 mm)
·
Pin: 0.3 in. (8 mm)
·<
- Stock: Special Order
- Model: RF74100AW
- SKU: RS-RF74100AW