S Series Elastomer Sealed Journal Bearing Bit

Delivery term:The date of payment from buyers deliver within days
  • Price:


  • minimum:

  • Total supply:

  • Delivery term:

    The date of payment from buyers deliver within days

  • seat:


  • Validity to:

    Long-term effective

  • Last update:

    2017-12-24 22:06

  • Browse the number:


Send an inquiries
Company Profile
Liyang Henyu Machining Co. Ltd
By certification [File Integrity]






Industrial Zone, Zhuze Town, Liyang, Changzhou, Jiangsu, China (213351)

Product details
Model Number: 8 1/2ST527GK(IADC:527) Brand Name: TRANSTONE Key Specifications/Special Features: Cutting structure:The wear-resistance of teeth is enhanced with premium tungsten carbide hard facing on the tooth surfaces for steel tooth bitThe durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bitGauge structure:Multiple gauge protection with gauge trimmers on the heel of cone, tungsten carbide inserts and hard facing on the shirttail increases gauge holding capability and bearing lifeBearing structure:High precision journal bearing with two thrust facesBalls lock the cone. Hard faced head bearing surfaceCone bearing inland with friction-reducing alloy and then silver-platedAbrasion resistance and seizure resistance of the bearing are improvedSeal and lubricationPremium HNBR O-ring, optimal seal compression and curved seal structure can enhance the seal performance
The pressure compensator system and advanced grease can greatly increase the lubricating reliability
Product application:
It can receive high WOB in the conventional drilling
It is suitable for various formations by matching cutting structure with different tooth exposure height
Size(in) Size(mm) IADC WOB(kN/mm) RPM(r/min) Applicable formations
8 1/2 215.9 527 0.35-1.0 140-60 Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft shale, soft limestone and more
Shipping Information:
  • Lead Time: 10 - 60 days
Main Export Markets:
  • Asia
  • Central/South America
  • Eastern Europe
  • Mid East/Africa
New Products