HDS HDP Roller Kelly Bushing for Drilling Rotary Table
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.
Roller Kelly bushing is divided into two types by drive mode, pin drive and square drive. Based upon duty, it can be divided into heavy duty, medium duty and light duty. Our Roller Kelly bushing is designed and fabricated as per API Spec 7K.
The axles of roller is fixed by four pieces of bolt M38 which tightening torque is 2KN·m. There are four hexnuts fixed the top of four large bolts with the covers tightly to avoid loosing.
Design Benefits of Oilfield Roller Kelly Bushing
- Because of its intergral construction, it can not fly out and hurt you.
- Pulling out or feeding off string can be done while rotating.
- Two transmission styles (square and pinconnect) are available.
- The bushing is easily installed into the master bushing, maintaining good alignment.
- 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".
Technical Sheet 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 |
Our Service
1. We possess a 24 hr response system to provide convenient, fast, and effective pre-sale, during sale and after-sale service.
2. Our promise: Any equipment sold by us at any place in the world, we will provide after-sale service promptly and efficiently. Any equipment component damaged by manufacturing defect or quality problem during the warranty period, we will bear the direct cost of the damaged parts.
3. Warranty period: 18 months from the day that the unit leaves factory or 12 months from the date that the unit is put into use (choose the earliest one ?which comes to an end as the calculation standard).
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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Integral Square Drive Drilling Rotary Table Kelly Bushing Images
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