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Heavy Duty Sheaves for Crown Block, Traveling Block, Hook Block, and Mast - China Suppliers and Factory
Product Specifications
| Product Name | Heavy Duty Sheave |
| Application | Used in Crown Block, Traveling Blocks and Hook Blocks, Mast and Derrick |
| Sheave OD | 600 mm – 1800 mm |
| Groove Diameter | 26 mm – 46 mm |
| This flexibility allows our products to be adapted to rig models from 1000 HP to 3000 HP. | |
| Material | 45# Alloy Steel (AISI 1045 / JIS S45C) |
| Temperature Rating | -40°C to 120°C |
| Service Life | 8–10 years under normal drilling conditions, with periodic bearing and groove maintenance as required. |
| Standard | API 8C Produced under API 8C |
| Third Party Inspection | Bureau Veritas (BV), CCS, ABS, SJS etc. |
Product Features
High Strength Materials
Forged and welded sheave bodies, typically manufactured from 45# or equivalent alloy steels, deliver excellent load-bearing performance and resistance to fatigue cracking.
Precision Groove Machining
Rope grooves are heat-treated and induction hardened to reduce wear and extend rope service life.
Comprehensive Inspection
Each sheave undergoes ultrasonic and magnetic particle testing before shipment, ensuring structural integrity and compliance with API 8C.
Customizable Options
Available for different sheave diameters, groove sizes, and rope capacities, with designs compatible with BOMCO, LS NOV, HONGHUA, RG and other international rig companies.
Proven Manufacturing Expertise
With more than a decade of production experience, we are a professional source factory for sheaves in China, supplying both domestic and international oilfield markets.
As a source manufacturer, we supply sheaves fully compatible with major OEM equipment from BOMCO, LS NOV, Honghua, RG and other well-known drilling equipment brands. Customers can expect high interchangeability, strict compliance with API 8C requirements, and production traceability from raw material to final inspection.
Contact Us For more details about the Sheave which is used for HONGHUA, RG, RONGSHENG, EMSCO, LSNOV.
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Product Details
Frequently Asked Questions
Q
What rig horsepower range are these heavy duty sheaves compatible with?
Our heavy duty sheaves are designed to be compatible with rig models ranging from 1000 HP to 3000 HP, thanks to the wide range of available sheave OD sizes (600 mm–1800 mm) and groove diameters (26 mm–46 mm).
Q
What material is used to manufacture the sheaves?
The sheaves are manufactured from 45# Alloy Steel (equivalent to AISI 1045 / JIS S45C). This material provides excellent load-bearing performance and strong resistance to fatigue cracking under heavy drilling conditions.
Q
Are the sheaves compliant with API 8C standards?
Yes. All sheaves are produced in compliance with API 8C standards. Third-party witness inspection reports are available from recognized certification bodies including Bureau Veritas (BV), CCS, ABS, and SJS.
Q
Which OEM drilling equipment brands are these sheaves compatible with?
Our sheaves are fully compatible with major OEM equipment from BOMCO, LS NOV, Honghua, RG, Rongsheng, EMSCO, and other internationally recognized drilling equipment manufacturers. High interchangeability is guaranteed.
Q
What is the expected service life of these sheaves?
Under normal drilling conditions with periodic bearing and groove maintenance, our heavy duty sheaves are designed to deliver a service life of 8 to 10 years. The rope grooves are heat-treated and induction hardened to further extend operational longevity.
Q
Can the sheaves be customized to specific requirements?
Yes. We offer customizable options including different sheave diameters, groove sizes, and rope capacities. As a professional source factory in China with over a decade of manufacturing experience, we can accommodate both standard and custom specifications for domestic and international oilfield markets.