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MT-TC Series Crown Block for Drilling Rigs - Reliable Equipment from China Suppliers and Factory
Product Specifications
| Model | MTTC90 | MTTC170 | MTTC225 | MTTC315 | MTTC450 | |
| Max. Hook Load (kN) | 900 | 1700 | 2250 | 3150 | 4500 | |
| Diameter of Wire Line (mm) | 26 | 29 | 32 | 35 | 38 | |
| O.D. of Sheaves mm (in) | 762 (30") | 1005 (40") | 1120 (44") | 1270 (50") | 1524 (60") | |
| Number of Sheaves | 5 | 6 | 6 | 7 | 7 | |
| Overall Dimension (mm) | Length | 2317 | 2668 | 2668 | 3192 | 3410 |
| Width | 2076 | 2460 | 2709 | 2783 | 2753 | |
| Height | 1577 | 1855 | 2469 | 2350 | 2420 | |
| Weight (KGS) | 2668 | 4540 | 6500 | 8500 | 11105 | |
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Third-Party Witness & Inspection Available:
Bureau Veritas (BV)
CCS
ABS
SJS
and other recognized certification bodies.
Compliance and Reliability
All MT-TC crown blocks are manufactured in full accordance with API Spec 4F (for drilling structures) and API Spec 8C (for drilling and production hoisting equipment). They also comply with the requirements of the Chinese industry standard SY/T 5527, ensuring safety and consistency with domestic regulations.
Each sheave in the crown block is individually certified to API Spec 8C (8C-0349), ensuring verified quality and performance under rated loads.
To guarantee long service life, the sheave grooves are subjected to quenching and surface hardening treatments, which greatly improve wear resistance and minimize deformation under heavy loads.
Each unit is inspected and tested to meet international safety requirements, offering drilling contractors a product that is both trustworthy and cost-efficient in long-term operation.
Product Features
- 🔩 The crown block is equipped with wireline guide rods and rope retention plates, which effectively prevent the drilling line from jumping out of the sheave groove or slipping under dynamic loads.
- 🛡️ A safety chain protector is installed to enhance operational security, while an integrated maintenance gantry provides convenient access for sheave inspection and repair.
- ⚙️ Depending on drilling contractor requirements, MTPM can supply the crown block with optional bailing pulleys and auxiliary pulley assemblies, expanding its application range.
- 🔄 The product design allows the crown block sheaves to be interchangeable with those of the traveling block when they share the same hook load rating, simplifying maintenance and reducing spare parts inventory.
- 🏗️ With these features, the MT-TC crown block represents a well-balanced solution that combines durability, operational safety, and adaptability to various rig configurations.
🔆
Engineered for drilling rig hoisting systems, combining durability, safety, and compliance with API and Chinese standards.
Product Details
MT TC 225 Crown Block
MT TC315
Frequently Asked Questions (FAQ)
Q
What API standards do the MT-TC crown blocks comply with?
The MT-TC crown blocks are manufactured in full accordance with API Spec 4F (drilling structures) and API Spec 8C (drilling and production hoisting equipment). They also meet the Chinese industry standard SY/T 5527. Each sheave is individually certified to API Spec 8C (8C-0349).
Q
What is the maximum hook load capacity available in the MT-TC series?
The MT-TC series ranges from 900 kN (MTTC90) up to 4,500 kN (MTTC450), covering a wide range of drilling rig hoisting requirements from light to heavy-duty applications.
Q
Which third-party inspection and certification bodies are available for the MT-TC crown block?
Third-party witness and inspection reports are available from internationally recognized bodies including Bureau Veritas (BV), CCS, ABS, and SJS, among others, ensuring the product meets global quality and safety standards.
Q
Are the crown block sheaves interchangeable with traveling block sheaves?
Yes. The MT-TC crown block sheaves are designed to be interchangeable with traveling block sheaves of the same hook load rating. This simplifies maintenance operations and helps reduce spare parts inventory costs on the rig.
Q
What measures are taken to extend the service life of the sheave grooves?
The sheave grooves undergo quenching and surface hardening treatments to significantly improve wear resistance and minimize deformation under heavy loads, ensuring long-term reliable performance in demanding drilling environments.
Q
Can optional accessories be added to the MT-TC crown block?
Yes. Depending on the drilling contractor's requirements, MTPM can supply the MT-TC crown block with optional bailing pulleys and auxiliary pulley assemblies. Additionally, safety chain protectors and an integrated maintenance gantry are available to enhance both safety and ease of maintenance.