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Rig Master

Rig-Master® Rigging Attachments have been designed to accomplish specific tasks while withstanding the particular forces involved. Rig-Master® heavy-duty designs resist rugged, high-cycle environments, and have numerous ranges and stainless steel auto-latches. Since 1954, Caldwell has worked with Rig-Master® Rigging Attachments to provide customers with top leading products for use in a vast array of industries.

Grabs, Clamps & Tongs

Rig-Master® Rigging Attachments provide adjustable lifting grabbers, barrier grabbers, beam grabbers, beam clamps, beam flange clamps, girder clamps, wall hooks, wall picks, beam tongs, rail tongs, slab tongs, and concrete pressure tongs for various industries and applications.

Drum Grabs, Clamps & Slings

Rig-Master® Rigging Attachments include vertical drum clamps, grabbers, and drum handling slings for easy lifting and transporting. For common uses in ribbed steel drums, the ratcheting belly band tightens securely below the first rib. Rig-Master® Slings allow for the easy handling of various sizes of steel drums/barrels and have a 1,000 lb. capacity. All are light in weight, high in strength, and resistant to oil.

Pipe Lifters & Manhole Handling

Rig-Master®’s patented concrete Pipe Pick™ provides a quicker, safer, and cleaner way of handling precast concrete pipes. Rig-Master® also supplies “teacup” pipe carriers, leveling pipe lifters, flange lifters, manhole sleeve lifters, and concrete manhole housing lifters that are compliant with ASME standards.

Pipe Grabs, Tongs, & Hooks

Rig-Master® Rigging Attachments also include pipe grabbers, pipe tongs, load hooks, and pipe hooks.

Load Leveling Slings & Lifting Magnets

Rig-Master® offers Adjust-A-Leg® two-point and four-point lifts, as well as chain sling saddle rings. Rig-Master® Rigging Attachments include basic lift magnets, constant lifting magnets, permanent lifting magnets, and round electric lift magnets.

Special Applications

Rig-Master® provides clamp-on bucket forks, “Corky” container lifting lugs, reel lifters, skip pans, torch cylinder carts, weld-on bucket hooks, excavation hook clevises, and more.

Synthetic Sling End Fittings

Rig-Master® Rigging Attachments provide Web-Trap® steel triangles & chokers, aluminum triangles, and chokers, Unilink® combination triangles and chokers, G-LinkTM couplers, web sling quick disconnects, and barrel and drum hooks.

quality & engineering

Caldwell’s Standard Quality Assurance program follows specific design criteria as required by ASME. If you would like your lifter proof-tested and a test certificate issued, please specify at the time of order.

Benefits your Company will Receive with a Caldwell Lifter:

  • Increased productivity
  • Increased safety of an engineered product
  • Low costs maintenance
  • Reliability and durability for long-lasting service

All Caldwell Lifters Have:

  • Identification nameplate
  • Rated capacities
  • Product Safety Labels

Caldwell Upholds to Industry Standards

The American Society of Mechanical Engineers (ASME) has developed standards that apply specifically to the devices Caldwell® designs. ASME B30.20 provides detailed information on the classifications, marking, construction, installation, inspection, testing, maintenance, and operation of below the hook lifting devices. ASME BTH-1 provides detailed information on the design criteria of below the hook lifting devices. ASME B30.9 provides detailed information on the fabrication, markings, usage, inspection, and maintenance of lifting slings. These standards serve as a guide to government authorities, manufacturers, purchasers and users of lifting devices.

Caldwell® Service

We offer solutions that will increase the productivity and effectiveness of your lifter while ensuring the safety, reliability, and compliance of your equipment. Our services include training, maintenance, and inspection. Caldwell’s Standard Quality Assurance program follows specific design criteria as required by ASME.


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