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Roller Bits For Core Barrel

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Roller Bits For Core Barrel Roller Bits For Core Barrel
DRILLMASTER ENGINEERING TECHNOLOGY CO., LTD
China

Description

Roller Bits For Core Barrel

Application: Suitable for 80-160Mpa hardness work of foundation piles.

Material: Tungsten carbide: YG11C, HRC88-92 + 42CrMo.

Size: 5 1/2’’, 5 7/8’’, 6 1/2’’, 8 1/2’’, 12 1/4’’, 12 1/2’’, 17 1/2’’.

Type: Weld-in roller bits, Roller bits with holder, Bolt-on roller bits

Features

1:All covered with 14mm carbide cones.

2: Common holder locking by pins.

3: Rubber sealing O ring, Sliding bearing, with bearing lubricating oil tank.

4: Drilling pressure:200-350KN.

Parameters

Part No.
Description
Standard Pin Size (API REG)
5 1/2’’,5 7/8’’, 6 1/2’’
Roller bit
3 1/2’’
8 1/2’’
Roller bit
4 1/2’’
12 1/4’’, 12 1/2’’
Roller bit
6 5/8’’
17 1/2’’
Roller bit
7 5/8’’
 
 
 

Advantages

  1. 55pcs Conical-ball carbide bits.
  2. Diameter of carbide bit:14mm.
  3. Full cover with carbide cones.
  4. High working efficiency.
  5. The bearing encapsulation hole is bolted encapsulation, even if the solder joint is worn off, the car clip spring in the bearing will not be broken and will not affect the bearing, can continue to use after spot welding.
  6. The problem of oil leakage from the oil sac end hole was solved.

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