90M Depth Friction Kelly Bar

 

Key Characteristic:

- Innovative Friction Mechanism: The bar relies on advanced frictional engagement between its telescopic sections. As the sections extend, they maintain a tight grip, ensuring smooth torque transmission without the need for mechanical interlocking. This design not only simplifies the structure but also enhances its adaptability in various drilling conditions.

- Precision Engineering: Crafted from high-strength materials, the 90m friction Kelly bar is built to endure the rigors of deep drilling. Its durability and resilience make it capable of withstanding the significant stresses involved in deep foundation work, even in challenging geological conditions.

- Extended Reach: With a maximum depth capability of 90 meters, this friction Kelly bar is ideal for projects requiring deep penetration into the earth, such as skyscraper foundations, bridge supports, and large-scale infrastructure developments. Its telescopic sections efficiently extend and retract, providing consistent torque and load transfer throughout the drilling process.

Performance and Reliability:

Designed to perform in the most demanding environments, the 90-meter friction Kelly bar offers unparalleled reliability and efficiency. Its friction-based operation ensures steady, controlled drilling, reducing the risk of slippage and maintaining optimal performance at great depths. This makes it an indispensable tool for professionals seeking precision and consistency in deep drilling operations.

The 90-meter depth friction Kelly bar is a sophisticated drilling tool engineered for demanding deep foundation projects. This Kelly bar features a telescopic design with multiple friction-based segments, allowing it to extend seamlessly to an impressive 90 meters.

 

 

Friction Kelly Bar Index

 

Model	Drilling depth(m)	A(mm)	B(mm)	D(mm)	Total weight(T)
5 sections Friction φ377-5*10m	45	10190	46700	11400	5.08
5 sections Friction φ377-5*12m	55	12190	56700	13400	6.10
5 sections Friction φ406-5*13m	58	13075	60800	14570	8.02
5 sections Friction φ406-5*15m	68	15075	70800	16570	9.27
5 sections Friction φ445-5*13m	58	13075	60800	14570	9.79
5 sections Friction φ445-5*15m	68	15075	70800	16570	11.30
5 sections Friction φ419-5*13m	58	13075	60800	14570	8.98
5 sections Friction φ419-5*15m	68	15075	70800	16570	10.17
5 sections Friction φ470-5*13m	58	13075	60800	14570	11.05
5 sections Friction φ470-5*15m	68	15075	70800	16570	12.75
6 sections Friction φ508-6*13m	68	13075	60800	14580	12.7
6 sections Friction φ508-6*15m	81	15075	70800	16580	14.65
6 sections Friction φ580-6*18m	99	18050	98000	19750	20.54
6 sections Friction φ580-6*20m	110	20050	110000	21750	22.82
5 sections Friction φ530-5*16m	72	16050	88000	17750	15.30
5 sections Friction φ530-5*18m	82	18050	98000	19750	17.21
6 sections Friction φ630-6*20m	110	20050	113300	21700	25.89
6 sections Friction φ630-6*24m	130	24050	137300	25700	31.07
Other types can be manufactured as per customers' demand.

 

 

 

 

The main differences from a friction Kelly bar to an interlocking Kelly bar are:

1. Applications:
- Friction Kelly Bar: Commonly used in applications where simplicity and cost-effectiveness are prioritized. They are often chosen for their ease of maintenance and operation.
- Interlocking Kelly Bar: Preferred in situations requiring higher precision and stability, particularly in challenging soil conditions or where greater torque and load capacities are needed.

2. Construction:
- Friction Kelly Bar: Typically simpler in design with fewer moving parts, leading to potentially lower maintenance requirements. The bar segments are often cylindrical and rely on friction for engagement.
- Interlocking Kelly Bar: More complex construction with interlocking segments that can include additional components like pins or slots to secure the connections. This design aims for higher stability and precision.

3. Mechanism of Operation:
- Friction Kelly Bar: Utilizes friction between the bar and the drive mechanism. The bar's segments are held in place by friction, which means there are no mechanical interlocks. This type relies on the surface contact to transfer torque and maintain stability.
- Interlocking Kelly Bar: Uses mechanical interlocks or locking mechanisms between segments to ensure a secure connection. This type has distinct joints or fittings that lock the segments together, preventing relative movement between them.

4. Performance:
- Friction Kelly Bar: Performance may be influenced by the wear and tear of the friction surfaces over time.
- Interlocking Kelly Bar: Generally offers more consistent performance due to the secure locking mechanisms that minimize movement between segments.

Each type has its own set of advantages depending on the specific requirements of the construction or drilling project.

 

 

 

A friction Kelly bar is most effective in the following types of drilling projects:

1. Low Torque Requirements: In drilling projects where the torque and load requirements are lower, a friction Kelly bar can perform effectively without the need for complex mechanical systems.

2. Soft or Loose Soils: It is suitable for projects involving soft or loose soil conditions where stability requirements are relatively low.

3. Cost-Sensitive Projects: Due to its simple design and lower maintenance needs, a friction Kelly bar is a cost-effective choice for projects with budget constraints.

4. Routine Drilling Work: It is well-suited for standard drilling tasks such as foundation piling and soil drilling in construction, where high precision and extreme conditions are not necessary.

Overall, a friction Kelly bar offers good performance and cost-efficiency in scenarios that do not require extreme operational conditions or high precision.

 

 

 

1. Hyper drill kelly bars can be provided of a damping noise system, which can sensibibly reduce the high frequency noises during the working operations. This system is composed by a phonoassorbent material applied to the outer scope of kelly bar and protected by a steel plate.

 

2. Our complete set of drill kelly bars are lightweight yet highly durable. Each tool boasts excellent linearity, thin walls, minimal gaps between rods, and wear-resistant threads. These features significantly meet the special requirements of drilling rigs for drill rods.

3. Our kelly bars use steel pipes from leading enterprises. They boast more than twice the yield strength and lifespan, meeting diverse drilling demands. Our strength is in superior material sourcing and quality control.

 

4. We are the first in China to offer a one-year warranty. Our strict raw material management and precise welding guarantee high quality. Our edge is in customer-oriented service and commitment.

 

 

5. Hyper drill kelly bars are designed by technicians and engineers with over twenty years experience.

 

 

 

 

 

 

 

 

 

 

 

 

 

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