Rotation-resistant rope is defined as stranded rope designed to generate reduced levels of torque and rotation when loaded and comprised of two or more layers of strands laid helically around the center, with the direction of lay of the outers strands being opposite to that of the underlying layer.  However, there are different levels of rotation resistance to consider.

Rotation-resistant rope (Category 1):  Stranded rope constructed so that it displays little or no tendency to rotate, or, if guided, transmits little or no torque.  It has at least 15 outer strands and is comprised of at least three layers of strands laid helically over a center in two operations, with the direction of lay of the outer strands being opposite to that of the underlying layer.  This rope is also known as Non-Rotating.

Rotation-resistant rope (Category 2):  Stranded rope constructed so that it has significant resistance to rotation.  It has at least 10 outer strands and is comprised of two or more layers of strands laid helically over a center in two or three operations, with the direction of lay of the outer strands being opposite to that of the underlying layer.  This rope is also known as Low Rotation.

Rotation-resistant rope (Category 3):  Stranded rope constructed so that it has limited resistance to rotation.  It has no more than 9 outer strands and is comprised of two layers of strands laid helically over a center in two operations, with the direction of lay of the outer strands being opposite to that of the underlying layer.  This rope is also known as Spin Resistant.

Come back again in the near future for the next installment of Wire Rope Corner.  Be safe out there.

Northern Strands Mining, Wire Rope, Attachments & Equipment Division excels by providing a wide range of equipment and services, by being the best full service provider of wire ropes, attachments, equipment and service. Truly Mine Hoisting Solutions®.

Northern Strands is proudly Saskatoon, Saskatchewan owned and operated.

For the third year in a row Northern Strands attended one of the largest safety trade shows in Western Canada.   The Industrial Safety Seminar was held at Praireland Park in Saskatoon, Saskatchewan.   Hundreds of people interested in learning more about work place safety were in attendance.   The Northern Strands double booth featured an Advanced Davit Arm System for entry and retrieval applications.   Below is a picture of the Davit System set up at the Industrial Safety Seminar

Many industry experts visited our booth to inquire about Northern Strands safety related divisions; Safety Training, Engineered Fall Protection, Wire Rope and Rigging and Suspended Access.   One of the more popular questions was, "What training courses do you offer?"   This was an excellent question!  

Our current training courses include:

• Fall Arrest Training
• Crosby Rigging Seminars
• Wirelock Socketing Seminars
• First Aid and CPR training
• Tugger Safety Training
• Suspended Access Equipment Training