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China Suppliers Factory MTPM TC-315 1524mm Guide Sheave Assembly for Crown Block Systems
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Deadline Sheave Assembly 1.jpg
Deadline Sheave Assembly 2.jpg

China Suppliers Factory MTPM TC-315 1524mm Guide Sheave Assembly for Crown Block Systems

The MTPM TC-315 Guide Sheave Assembly is a high-quality forged-welded guide pulley component designed specifically for 1524 mm (60 inch) diameter sheaves utilized in crown block systems. As a leading supplier and factory in China, we ensure that our products meet stringent quality standards, providing reliable performance and durability for heavy machinery applications. Trust in our expertise to deliver exceptional guide sheave assemblies tailored to your operational needs
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    Product Details

    Product Specifications
    • ▶Product Name:  Deadline Sheave Assembly / Guide Sheave Assembly
    • ▶Application:  Used on Drilling TC315 Crown Block
    • ▶Sheave OD:  1524 mm (60 inches)
    • ▶Groove Diameter:  38 mm (1 1/2 inch)
    • ▶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:  Produced under API 8C
    • ▶Third-Party Inspection:  Bureau Veritas (BV), CCS, ABS, SJS, etc.
    Product Features
    OEM Interchangeability

    Designed with full compatibility for BOMCO, LSNOV, and similar manufacturer assemblies, enabling direct replacement and minimized rig downtime.

    Durable Alloy Steel Construction

    The alloy steel main body provides excellent wear resistance, fatigue strength, and ease of repair through forging-welding.

    Strict NDE Protocols

    Mandatory MPI and UT ensure each unit meets stringent structural and safety criteria, reducing risks in field operations.

    API 8C Compliance

    Manufactured under API Spec 8C licensing, meeting material traceability, grooving, and inspection requirements. API 8C certificate number: 8C-0349.

    Precision Groove Sizing

    The groove diameter (38 mm) matches the drilling line, avoiding excessive friction or wear, while optimizing line support and longevity.

    Crafted to mirror the fit and function of BOMCO, LSNOV, and other leading OEM assemblies, it ensures seamless interchangeability. This assembly is designed to precisely guide the drilling line — whether it's the fast line or deadline — within the crown block framework, maintaining proper alignment and load distribution. The main sheave body is made from high-quality 45# alloy steel, chosen for superior toughness, fatigue resistance, and weldability, ensuring long-term reliability in demanding drilling operations.
    Quality Assurance & Compliance

    Each TC-315 Guide Sheave Assembly undergoes rigorous inspection protocols before delivery. We perform full Magnetic Particle Inspection (MPI) and Ultrasonic Testing (UT) on all welds and sheave surfaces to detect internal and surface discontinuities, ensuring structural integrity. The rope groove diameter is precisely sized to accommodate 38 mm (1½ inch) drilling line.

    Overall, manufacturing and quality control adhere strictly to API Spec 8C standards, offering global assurance of safety and performance.

    ✓  API 8C ✓  MPI Tested ✓  UT Tested ✓  BV / CCS / ABS / SJS
    📞  Contact us for more details about the Guide (Deadline) Sheave Assembly used for HONGHUA, RG, RONGSHENG, EMSCO, LSNOV.
    ⓘ  All product names, trademarks, and part numbers are used for identification purposes only and are the property of their respective owners. We are an authorized and recognized supplier. If you are looking for specific mud pump safety valve part numbers, please contact our sales team for detailed references or technical support.
    Product Details
    Deadline Sheave Assembly 2
    Deadline Sheave Assembly 1
    Frequently Asked Questions (FAQ)
    Q1 What is the Deadline Sheave Assembly used for on the TC315 Crown Block?
    The Deadline Sheave Assembly is designed to precisely guide the drilling line — including the fast line and deadline — within the TC315 Crown Block framework. It maintains proper alignment and load distribution during drilling operations, ensuring safe and efficient performance.
    Q2 Is this sheave assembly compatible with BOMCO and LSNOV crown blocks?
    Yes. The assembly is engineered for full OEM interchangeability with BOMCO, LSNOV, HONGHUA, RG, RONGSHENG, and EMSCO crown block configurations, allowing direct drop-in replacement and minimizing rig downtime.
    Q3 What material is used in the sheave assembly, and why?
    The main sheave body is manufactured from 45# Alloy Steel (AISI 1045 / JIS S45C). This material is selected for its superior toughness, fatigue resistance, and weldability, making it ideal for long-term reliability under demanding drilling conditions.
    Q4 What quality inspections are performed before delivery?
    Each assembly undergoes mandatory Magnetic Particle Inspection (MPI) and Ultrasonic Testing (UT) on all welds and sheave surfaces. These non-destructive evaluation (NDE) protocols detect internal and surface discontinuities, ensuring full structural integrity prior to shipment.
    Q5 Is the assembly manufactured in compliance with API standards?
    Yes. The Deadline Sheave Assembly is manufactured under API Spec 8C licensing (certificate number: 8C-0349), covering material traceability, groove sizing, and inspection requirements. Third-party inspection reports from Bureau Veritas (BV), CCS, ABS, and SJS are also available upon request.
    Q6 What is the expected service life of the TC315 Guide Sheave Assembly?
    Under normal drilling conditions with periodic bearing and groove maintenance, the assembly is designed to deliver a service life of 8 to 10 years. The temperature rating of -40°C to 120°C also ensures reliable performance across a wide range of operating environments.

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