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  • API 7K Kelly Bushing square Drive Roller kelly Bushings Oil Drilling Rig Equipment Tool
  • API 7K Kelly Bushing square Drive Roller kelly Bushings Oil Drilling Rig Equipment Tool
  • API 7K Kelly Bushing square Drive Roller kelly Bushings Oil Drilling Rig Equipment Tool
  • API 7K Kelly Bushing square Drive Roller kelly Bushings Oil Drilling Rig Equipment Tool
  • API 7K Kelly Bushing square Drive Roller kelly Bushings Oil Drilling Rig Equipment Tool
  • API 7K Kelly Bushing square Drive Roller kelly Bushings Oil Drilling Rig Equipment Tool
API 7K Kelly Bushing square Drive Roller kelly Bushings Oil Drilling Rig Equipment Tool

API 7K Kelly Bushing square Drive Roller kelly Bushings Oil Drilling Rig Equipment Tool

  • >= 1 Sets
    $1,500
View product details

API 7K Kelly Bushing square Drive Roller kelly Bushings Oil Drilling Rig Equipment Tool

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Torque Transmission & Structural Support: Connects drill components in oil drilling rigs, transferring rotational force and withstanding extreme pressures and wear during drilling operations.
  • Alignment & Stability: Designed to ensure precise alignment between drill shafts while accommodating slight misalignment, enhancing operational efficiency and durability.

Key features

  • 1. Durable Carbon Steel Construction

    • With high-strength carbon steel material, you can ensure exceptional durability and resistance to wear in harsh oil drilling environments.

  • 2. Secure Symmetrical Flange Design

    • With a precision-engineered symmetrical flange structure, you can achieve effortless installation and secure alignment on standard drilling rigs, minimizing downtime.

  • 3. High-Performance Torque Transfer

    • With a robust casting process optimized for heavy-load applications, you can handle extreme torque demands, ensuring reliable performance during deep drilling operations.

  • 4. Commercial-Grade Reliability

    • Designed for continuous operation in industrial oil drilling scenarios, you can maintain productivity with reduced mechanical failure risks compared to non-certified alternatives.

  • 5. API 7K Certified Safety Standards

    • With API 7K certification, you can meet strict industry safety and performance requirements, ensuring compatibility and compliance with global drilling rig specifications.

Product details

API 7K Kelly Bushing square Drive Roller kelly Bushings Oil Drilling Rig Equipment Tool

The API 7K Kelly Bushing Square Drive Roller is a robust drilling component designed for oil drilling rigs, engineered to withstand high torque and harsh environmental conditions. Crafted from carbon steel/steel via precision casting, it ensures durability and alignment stability in rotational applications.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialCarbon Steel/Steel (API 7K compliant)Heavy-duty drilling in oil rigs
Processing TypeCastingEnsures structural integrity under load
DesignCylindrical with flanged connectionsSecure shaft alignment in rotating systems
Torque CapacityUp to 15,000 Nm (varies by model)High-load drilling operations
Misalignment Tolerance±0.5mm (adjustable)Accommodates shaft misalignment in machinery
Warranty1 year (parts and labor)Peace of mind for industrial use

Customization guide

Adjustable parameters include:

  • Shaft Diameter: Tailor central opening size for specific drill rig configurations.
  • Material Composition: Opt for corrosion-resistant alloys for offshore or chemical environments.
  • Surface Finish: Customize coatings (e.g., red epoxy for visibility or anti-corrosion).

Get inspired

With its rugged construction and precise engineering, this Kelly Bushing ensures seamless power transmission in drilling operations. Whether you need to handle extreme torque or adapt to misaligned shafts, this component delivers reliability under pressure.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Torque Capacity12,000 Nm+15% (13,800 Nm)+30% (15,600 Nm)*
Material HardnessHRC 35HRC 40HRC 45
Corrosion ResistanceASTM A250+20% (ASTM A380)Triple industry standard
Misalignment Tolerance±0.3mm±0.5mm±0.8mm

Supplier's note

  1. Technical Breakthroughs:

    • The Pro Model’s triple corrosion resistance enables safe use in offshore drilling with corrosive fluids.
    • HRC 45 material hardness (Pro) ensures longevity in abrasive environments.
    • 30% higher torque capacity (Pro) outperforms industry benchmarks for heavy-duty applications.

  2. Version Selection Guidance:

    • Base Model: Ideal for standard onshore drilling where cost-efficiency is prioritized.
    • Advanced Model: Suitable for mid-tier operations requiring enhanced durability (e.g., moderate corrosion exposure).
    • Pro Model: Best for extreme conditions (e.g., offshore drilling, high-torque fracking) where reliability and longevity are critical.

Example Use Case: With the Pro Model’s 15,600 Nm torque capacity, you can handle heavier drilling loads in deep-sea rigs, reducing downtime caused by component failure. Its ±0.8mm misalignment tolerance also accommodates uneven shaft alignment in aging machinery.

Frequently asked questions

  • Which API 7K Kelly Bushing model is best suited for heavy-duty oil drilling operations?

  • How do I maintain the API 7K Kelly Bushing to prevent wear in harsh drilling environments?

  • Why is carbon steel preferred over alloy steel for this kelly bushing?

  • Can the API 7K Kelly Bushing be customized for specific drilling rig dimensions?

  • Is the API 7K Kelly Bushing certified to meet industry standards?

  • Does the API 7K Kelly Bushing come in variants for different drilling depths?

  • What storage recommendations are there to preserve the red finish and prevent corrosion?

  • What does the 1-year warranty cover for the API 7K Kelly Bushing?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Kelly BushingsOil drilling operations (API 7K compliant)Material: ASTM A36 (Industry) vs Our Base (ASTM A536 ▲) vs Advanced (ASTM A514 ▲▲)
Load Capacity: 150 kN (Industry) → 180 kN (Base ▲) → 220 kN (Advanced ▲▲▲)
Warranty: 1 year standard		Enhanced durability in Advanced (▲▲▲), cost-effective Base option, API complianceStandard may corrode faster; Advanced requires specialized maintenance
Drill BitsHard rock drilling (e.g., shale, granite)Material: Tungsten carbide (ISO P32 grade) ▲▲
Hardness: 92 HRA (Industry) → 95 HRA (Our Advanced ▲)		High hardness for tough formations, long lifespan in Advanced versionsExpensive; not suitable for soft ground or high-temperature environments
Drill CollarsWeight-on-bit applicationsMaterial: High-tensile steel (ASTM A536 ▲)
Pressure Rating: 1000 psi (Industry) → 1500 psi (Advanced ▲▲)		Withstands extreme pressure, provides stable weight distributionHeavy weight increases handling complexity; prone to wear at joints
Rotary TablesDirectional drilling adjustmentsDrive Type: Hydraulic (Industry) vs Electric (Our Advanced ▲)
Max RPM: 450 (Industry) → 550 (Advanced ▲▲)		Smooth rotation control, quieter operation in Advanced versionsHigher cost for electric variants; requires frequent lubrication checks
Swivel AssembliesMud circulation systemsMaterial: Stainless Steel 316L (Advanced ▲)
Temp. Range: 200°F (Industry) → 300°F (Advanced ▲▲)		Corrosion-resistant in harsh fluids, high-temperature toleranceComplex assembly; premium materials increase upfront cost
Drill PipesStandard drilling operationsGrade: API 5DP (Industry) vs Our Advanced (API 5CT ▲)
Wall Thickness: 9.5 mm (Industry) → 11 mm (Advanced ▲)		Thicker walls in Advanced reduce wear, API-compliant for global useHeavier Advanced pipes may strain smaller rigs; requires regular NDT inspections

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