Kelly Bushing Square Drive

Kelly Bushing Square Drive

Spectrum Drilling Tools International manufactures Square Kelly Bushings suitable for 17.5”, 20.5”, 27½”, and 37½” Square Drive Master Bushings. These Square Kelly Bushings can handle Square or Hex Kelly sizes ranging from 3″ to 6″. We also offer NOV equivalent Kelly Bushings. Square Drive Kelly Bushings are designed for heavy-duty drilling operations in high torque conditions, whether in offshore or onshore drilling operations.

We offer Square Drive Kelly Bushings in three sizes of Master Bushings:

1. 27 SDHD for 27½” / 37½” Master Bushing.
2. 20 SDHD for 20½” Master Bushing.
3. 17 SDHD for 17½” Master Bushing.

Features & Benefits

API Standard
  • Kelly Bushings manufactured by Spectrum Drilling Tools International are designed, manufactured, and tested in accordance with the requirements of API-7K Specification (latest edition). They are supplied with the API-7K Monogram, ensuring that they meet the highest industry standards for quality and performance.

  • Spectrum’s API-7K License for Kelly Bushings has been held for over 23 years and counting.

Design Features
  • Spectrum’s Kelly Bushings are equivalent to NOV’s HDP Kelly Bushings.
  • Kelly Bushings can accommodate different sizes of Kelly, whether they are Hex or Square, ranging from 3 inches to 6 inches. This flexibility is achieved by changing the necessary rollers and wiper assembly.
  • Estimated Design life : 10 Years
Health, Safety and Environment
  • Kelly Bushings are manufactured with strict adherence to HSE (Health, Safety, and Environment) guidelines to ensure the safety of personnel and equipment during drilling operations.
  • Effortless Master Bushing Installation.
  • Quick and Simple Spare Replacement.
  • Products undergo Non-Destructive Testing (NDE) for Quality Assurance.
Lead Time
  • Fastest delivery of both capital equipment and spares within the shortest lead time.

Part No.

Kelly Size / Type SDHD Roller Assembly Complete ABI P/N Identical VARCO P/N
3" Hex
2701-S
2101
3667
3.1⁄2" Hex
2702-S
2102
2102
4.1⁄4" Hex
2703-S
2103
3669
5.1⁄4" Hex
2704-S
2104
3672
6" Hex
2705-S
2105
3673
3" Sq.
2706-S
2106
3660
3.1⁄2" Sq.
2711-S
2110
3661
4.1⁄4" Sq.
2707-S
2107
3662
5.1⁄4" Sq.
2708-S
2108
3665
6" Sq.
2709-S
2109
3666

Part List

S. No. Description Qty. Per Unit SDHD
1
Kelly Bushing Body less roller assembly
01 No.
2710-S
2
Hold down bolt
04 No.
2711
3
Hold down bolt lock screw
04 No.
2711-A
4
Nut for hold down bolt
04 No.
2712
5
Lock washer for nut
04 No.
2713
6
Drive pin with washer
04 No.
--
7
Wrench
01 No.
2715
8
Wiper assembly
01 No.
2716
9
Wiper Retainer Plate
01 No.
2716-B
10
Wiper Retainer Plate Screw
08 No.
2716-C
11
Roller Pin
04 No.
2717
12
Roller Bearing
04 No.
2718
Sleeve Bush
04 No.
2719
13
Thrust Washer
08 No.
2720
14
Lifting Sling (Four Hooks Type)
01 No.
2721

Optional Products

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