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China MT-TC Series Crown Block for Drilling Rigs - Reliable Hoisting Equipment from 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 | |
ⓘ
Third party witness and inspection report available: Bureau Veritas (BV), CCS, ABS, SJS etc.
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
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 (for drilling structures) and API Spec 8C (for drilling and production hoisting equipment). They also comply with the Chinese industry standard SY/T 5527.
Q
What is the maximum hook load capacity available in the MT-TC crown block series?
The MT-TC series offers a maximum hook load capacity of up to 4,500 kN with the MTTC450 model, making it suitable for heavy-duty drilling operations.
Q
Are third-party inspection and certification services available for MT-TC crown blocks?
Yes. Third-party witness and inspection reports are available from recognized certification bodies including Bureau Veritas (BV), CCS, ABS, and SJS, among others.
Q
Can the crown block sheaves be interchanged with traveling block sheaves?
Yes. The MT-TC crown block is designed so that its sheaves are interchangeable with those of the traveling block when they share the same hook load rating. This simplifies maintenance and helps reduce spare parts inventory on-site.
Q
What measures are taken to extend the service life of the sheave grooves?
The sheave grooves undergo quenching and surface hardening treatments during manufacturing. These processes significantly improve wear resistance and minimize deformation under heavy loads, ensuring a longer and more reliable service life.
Q
What optional accessories are available for the MT-TC crown block?
Depending on drilling contractor requirements, MTPM can supply the crown block with optional bailing pulleys and auxiliary pulley assemblies. These options expand the operational application range of the crown block across different rig configurations.