Sheaves and bearings for crown & travelling block and cranes

Experienced supplier of sheaves and bearings for CMC, riser tensioners, crown and travelling blocks for all major OEMs
Sheaves and bearings for crown & travelling block and cranes

Tratec has extensive competence and experience within sheaves, bearings and other spare parts for crown blocks, travelling blocks, CMCs, riser tensioners, and offshore cranes.

We provide the identical sheaves and bearings as OEM, however at considerable cost savings for the end user.

Our team of specialist drilling engineers can provide technical support, as well as inspection, recertification, overhaul, installation, testing and reactivation of crown block, travelling block and cranes. We can promise 24-7 support, fast reponse on all inquiries, and great service.


Tratec has delivered more than 20 complete crown & travelling block spare part and recertification projects the last years. References include rig companies Odfjell Drilling, Maersk Drilling, COSL Drilling Europe, Saipem, Transocean, Dolphin Drilling, and others.

Tratec is an experienced specialist supplier of overhaul, SPS, parts and service for rig and drilling equipment. We can provide Norwegian quality and decades of experience, while maintaning sensible prices and flexible solutions.

Cost savings on sheaves and bearings:

Tratec have delivered solid cost savings on sheaves and bearings to our customers, compared to sourcing the identical parts through OEM. This is due to going directly to the sheave/bearings factory, our low cost base, spare parts system built through more than a decade, and utilizing our experienced drilling equipment engineers at competitive rates.

Tratec supplies the following parts to crown & travelling blocks, riser tensioners, CMC and cranes:

  • Sheaves
  • Bearings
  • Seals
  • Bearing covers
  • Shafts
  • Pins
  • Shims
  • Plates
  • Grease fittings
  • Bolts, nuts, screws, and washers

Tratec supply sheaves and bearings for the following equipment models:

  • National, Ideco, and Dreco crown block and travelling block
  • National Oiwell Varco Crown block and travelling block
  • MH crown clock and travelling block
  • NOV Crown Mounted Compensators (CMC)
  • NOV Riser Tensioner System
  • MH Crown Mounted Compensators (CMC)
  • MH Riser Tensioner System
  • Offshore Cranes

Tratec can supply overhaul and parts compatible with the following crown block, travelling block, tensioner systems, and crane makers and trademarks: National Oilwell Varco (NOV), MHWirth, MH, Dreco, Ideco, National, Varco, Gardner Denver, Hydralift, and others. Tratec is an independent supplier of drilling equipment parts. Tratec is neither a licensee, nor is affiliated with any of the named original equipment manufacturers (OEM). The manufacturer’s names, equipment names, or trademarks used herein are solely for identification purposes, and are not intended by Tratec to cause confusion as to the source, sponsorship, or quality of the parts supplied by Tratec. The original equipment manufacturers named above and throughout this website do not sponsor, promote, warranty or endorse Tratec’s supply of parts.

Get in touch

Christian Willumsen
Christian Willumsen
Sales Director
+47 97 01 40 06

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