3 1/2" Square Drive Oil Drilling Roller Kelly Bushing
Product Descrption
Roller Kelly bushing is to drive kelly by matching with rotary bushing. There are two drive modes: square drive and pin drive. Thre types: Heavy, medium, and light. For kelly: Square and Hexagonal. It fits for 17 1/2-49 1/2 in rotary tables. The product is designed and manufactured according to API Spec 7K Specification for Drill and well servising Equipment.
According to the driving mode, it could be divided into square drive type and pin drive type. According to the kelly, there are square Relly bushing and hexagonal Relly bushing. It mainly consists of roofcover, bottom cover, axls pin, roller, fastening bolt and stals, etc.
Xi'an TianRui Petroleum Machinery Equipment Company Limited is a professional manufacturer of drilling equipments and tools which is located in Xi'an City, enjoying convenient transportation.
Basic Specialities of Oilfield Roller Kelly Bushing
- The bushing is easily installed into the master bushing, maintaining good alignment.
- Because of its intergral construction, it can not fly out and hurt you.
- Pulling out or feeding off string can be done while rotating.
- The contact between Kelly and roller is rolling contact, so friction is lower, and weight on bit is accurate.
- Through the rotation of four rolls, the friction between rolls and kelly pipes is reduced to extend service life.
- It is designed and manufactured according to API Spec 7K “Specification For Drilling Equipment".
- Two transmission styles (square and pinconnect) are available.
Technical Information of Our Oilfield Roller Kelly Bushing
| Model | Type | Way of Drive | Square(in) | Hex(in) |
| HDS | Heavy | Square Drive | 3-6 | 3-6 |
| 27-HDP | Pin Drive | 3-6 | 3-6 |
| 20-HDP | Pin Drive | 3-6 | 3-6 |
| RTM4 | Medium | Square Drive | 2 1/25 1/4 | 3-4 1/4 |
| 20-MDP | Pin Drive | 2 1/2--4 1/4 | 3-4 1/4 |
| 17-MDP | Pin Drive | 2 1/2--4 1/4 | 3-4 1/4 |
| RTS4 | Light -duty | Square Drive | 2 1/2--4 1/4 | 3-4 1/4 |
Xi'An TianRui Petroleum Machinery Equipment Company Limited follows the principle of "quality first, science and technology innovated, people oriented", it benefits from the convenient running, high efficiency, swift reaction, experienced experts and the advanced management. In a meanwhile, it has about 50 sub-contractors to cooperate all over the country, and it always sticks to good faith, strictness, specialty, innovation, also satisfactory service.our products have already been exported to USA, South America, Africa, Middle East, Russia and some other countries (regions).
Competitive Advantages
1. We offer high quality products at competitive price.
2. Shortest delivery time.
3. Flexible payment terms.
4. Timely after-sale service.
5. Most of our equipment can be replaceable with international brands.
6. Our products have been exported to Argentina, Egypt, US, Australia, Romania, Pakistan, Dubai, Abu Dhabi, Iran, India, Indonesia, Vietnam, Malaysia and many other countries.
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3 1/2" Square Drive Oil Drilling Roller Kelly Bushing Images
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