Petzl Rescue Pulley

The Petzl Rescue Pulley features robust construction and pivoting side plates, offering exceptional strength and efficiency. This makes it a top choice for any situation that requires rescuing, lifting heavy objects, or frequent use.

Features

• Specifically engineered to handle heavy loads or withstand intensive use effectively.
• Equipped with a large diameter sheave mounted on sealed ball bearings, ensuring exceptional efficiency.
• Designed to accommodate up to three carabiners, enhancing ease of use in various applications.

Specifications

Technology

Technical Notice

• Download the PDF : technical-notice-RESCUE-2 - 1.20 MB
• Download the PDF : technical-notice-COMM_POULIES_1 - 1.12 MB

Declaration Of Conformity

• Download the PDF : UE-Declaration-P50A-AN-Rescue - 0.65 MB
• Download the PDF : UKCA-Declaration-P50A P50AN-RESCUE - 0.57 MB

Tips for maintaining your equipment

• Download the PDF - 2.72 MB

Inspection

PPE inspection procedure

• Download the PDF - 1.09 MB

PPE checklist

• Download the PDF - 0.20 MB
  

Technical Content

Pulley System Efficiency Tests With Maestro, I'D S, Pro, Traxion, Rollclip...

There can be a big difference between the theoretical efficiency of a pulley system and its actual efficiency. Here are test results from the Petzl lab.

1. Efficiency depending on the device used at the head of the system.

The force required to raise a 100 kg mass was tested under several configurations with different devices at the head of the system and with ropes of various diameters.

Test Protocol:

• Ropes tested: RAD LINE 6 mm, 7 mm cord, SEGMENT 8 mm, PUSH 9 mm, CLUB 10 mm, PARALLEL 10.5 mm, AXIS 11 mm, VECTOR 12.5 mm.
• Measurements were made with a constant pull rate of 1.5 meters/minute, on new devices and ropes.
• The results are given for information only; in the field there are numerous variables to take into account (position of haul system elements, rope diameter and construction, hauling speed, hauling smoothness, the haul load...).
  
  

Note: Pulley efficiency ratings in the Instructions for Use are based on values measured with a simple 1:1 directional. Hauling efficiency F = xx M is the value obtained with the smallest compatible rope diameter for the device. The pulley efficiency expressed in % is calculated from this value. Efficiency is always less than 100%, which is the efficiency of an ideal pulley (impossible in reality). Example for MAESTRO S: F = 116 M, efficiency = 86%

2. 3:1 Haul system efficiency depending on the redirect point used

Using Pulleys With Small-Diameter Rope or Cord

As part of their certification as PPE, Petzl pulleys are compatible with ropes greater than 7 mm in diameter. The use of thinner cords may be possible.

The EN 12278 standard does not require setting a minimum diameter limit for compatibility with pulleys. However, Petzl pulleys show compatibility only with diameters greater than 7 mm, regardless of the type of cordage (cord, dynamic rope, low-stretch rope, static rope...).

Using cords in pulleys is common: accessory cord in a double mariner pulley system, various haul systems, hauling or rescue with PUR LINE and RAD LINE...

Some pulleys have a space between the sheave and the side plates, where a thin cord can jam in case of an off-axis pull. So they are not compatible with small-diameter cordage. Some pulleys can be used with small-diameter cords, except in certain cases (see table below). The smaller the cordage diameter, the greater the risk of derailment, especially with diameters less than 5 mm. Always heed the use and strength limits of the cord, indicated in its Instructions for Use and/or the manufacturer's directions.