DOUBLE RESCUE PULLEYS

Strongest aluminum double sheave snatch-block type pulleys available. Designed for ropes up to 5/8” diameter. Ultra-lightweight sheave fitted with Oilite® bushing, or sealed bearing and rotating high strength alloy aluminum sideplates. Triangular rigging hole accepts up to three 13mm carabiners.

2″ DOUBLE SHEAVE WITH BECKET

This compact double sheave pulley was developed for 7/16″ to 1/2″ diameter ropes. Round rigging hole accepts two carabiners.

Strength: 8,100 lbf.
RWL: 810 lbs.
Dimensions: 6.5″ x 2.25″
Pitch Diam: 1.9″
Weight: 14 oz.
Color: Red
Rating: General Use.

610022 – 2″ Double, Oilite® Bushing
610022B – 2″ Double, Sealed Bearing

Exceeds NFPA 1983, 1985 Edition ANSI/OSHA strength specifications.


3″ DOUBLE SHEAVE

Identical in design and specifications to the 3″ Double Sheave Pulley with becket but WITHOUT the becket rigging point. Accepts ropes up to 5/8″ diameter.

Strength: 12,000 lbf.
RWL:  1,200 lbs.
Dimensions: 8″ x 3″ x 3.5″
Pitch Diam: 2.3″
Weight: 24 oz.
Color:  Red
Rating: General Use.

610023 – 3″ Double, Oilite® Bushing
610023B – 3″ Double, Sealed Bearing

Exceeds NFPA 1983, 1985 Edition ANSI/OSHA strength specifications.


3″ DOUBLE SHEAVE WITH BECKET

Features two 2.75″ diameter x 7/8″ wide sheaves separated by a high strength alloy aluminum plate with rigging becket and mounted on Oilite® bushing or sealed ball bearing. Main rigging point is constructed to accommodate three rescue carabiners. Another larger hole in the mid-section of the sideplates allows the unit to be used with the RSI Big Hook Carabiner. Accepts ropes up to 5/8″ diameter.

Strength: 12,000 lbf.
RWL: 1,200 lbs.
Dimensions: 10″ x 3″ x 3.5″
Pitch Diam: 2.3″
Weight: 24 oz.
Color: Red
Rating: General Use.

610025 – 3″ Double w/ Becket, Bushing
610025B – 3″ Double w/ Becket, Bearing

Exceeds NFPA 1983, 1985 Edition ANSI/OSHA strength specifications.


 

4″ TRIPLE SHEAVE

The only triple sheave pulley with rotating sideplates. Designed for 7/16″ – 5/8″ ropes. Can be reaved at any point on the line. 5:1 triple over double block and tackle system possible when used in conjunction with Double Sheave Pulley with becket. High strength alloy aluminum construction with Oilite® Bushing or Sealed Bearing. Triple carabiner rigging point.

Tensile Strength: 15,000 lbf.
RWL: 1,500 lbs.
Dimensions: 10″ x 4″ x 4.5″
Pitch Diameter: 3.5″
Weight: 70 oz.
Color: Gold
Rating: General Use

610034 – 4″ Triple, Oilite® Bushing
610034B – 4″ Triple, Sealed Bearing

Exceeds NFPA 1983, 1985 Edition ANSI/OSHA strength specifications.


 

BEARING vs. BUSHING

In rescue loads, the friction difference between bushings and bearings is minimal. It is only with loads that are greater than 5,000 lbs. that you begin to see the difference in friction. Ball bearings can dent the bearing race (brinelling). Sealed bearings can become contaminated with grit and seize. Oil Impregnated bronze bushings are stronger because there is a constant interface between the shaft, bushing, and pulley sheave. The bronze bushing is made from a soft material that will conform to the contaminant. Additionally, pulleys with bushings can be taken apart and cleaned.

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