Crane Wire Rope Diameter Selection Tool

This crane wire rope diameter selection tool automatically matches the minimum wire rope diameter that meets hoisting strength requirements based on the minimum breaking force, nominal tensile strength, rope construction and core type. An undersized diameter leads to insufficient breaking force, resulting in wire breakage or rope fracture, which may cause load falling, equipment damage and personal safety accidents. However, an oversized diameter increases the load on drums, sheaves and hoisting mechanisms, raises equipment procurement costs and aggravates mechanism wear risks. This tool effectively helps crane design, procurement and related personnel complete wire rope selection and verification, ensuring the safety, compliance and cost-effectiveness of crane hoisting operations.
Crane Wire Rope Diameter Selection Tool
→ Crane Wire Rope Minimum Breaking Load Calculator
Recommended Minimum Nominal Diameter:
– mm
Corresponding Standard Breaking Force:
– kN

Instructions for Use

Step 1: Calculate the required minimum breaking force

Click the link below the input box to navigate to the Crane Wire Rope Minimum Breaking Load Calculator. Enter the operating parameters step by step to derive the minimum breaking force required for your working condition.

This step converts working-condition requirements — including rated load, sheave block ratio and duty class — into the strength index required for wire rope sizing, which serves as the input basis for this selection tool.

Step 2: Match and select the nominal wire rope diameter

Enter the breaking force value obtained from the previous step into the Required Minimum Breaking Force input box, then select the following three parameters in sequence:

  • Rope Construction: Select the corresponding strand structure according to your design scheme or original equipment specification (e.g. 6×19W round strand, 6VX V-shaped strand, 35W×7 compacted strand, etc.)
  • Core Type: Select Fibre Core (FC) or Steel Core (IWR/IWS)
  • Nominal Tensile Strength: Select the nominal tensile strength grade of the wire rope

After confirming the parameters, click the Calculate button. The crane wire rope diameter selection tool will automatically match the smallest nominal diameter that meets the breaking force requirement in the GB 8918-2006 (equivalent to ISO 3154:1988). It will also display the standard minimum whole-rope breaking force corresponding to this diameter, along with a verification result indicating whether the requirement is satisfied.

Notes

  • The diameter output by this tool is a theoretically calculated value. For actual procurement and on-site installation of wire ropes, please select the nearest standard commercial diameter size.
  • For wire ropes intended for non-hoisting applications such as static stay cables and guy ropes, the required safety factors differ from those of hoisting ropes. Do not directly apply the results of this wire rope selection tool to such use cases.

Applicable Products

  • Overhead Cranes
  • Gantry Cranes
  • Jib Cranes
  • Casting Overhead Cranes
  • Container Gantry Cranes
  • Electric Wire Rope Hoists
  • Electric Winches

Contact Details

DGCRANE is committed to providing the professional Overhead crane products and relavent service. Exported to Over 100 Countries, 5000+ Customers Choose Us, Worth to be Trusted.

sales@dgcrane.com

+86 373 387 6188

+86 189 3735 0200
+86 189 3735 0200
Floor 30,Gongyuan INT'I Building, Jinsui Road, Xinxiang City, Henan Province, China

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