MR-3 Manta Ray Earth AnchorAWR #3500-50 • MFR #MR3

by MacLean Power Systems

  • The MR-3 is a hot dipped galvanized heavy duty ductile iron anchor
  • Holding capacity is 4.5 tons in normal soils and 10 tons in hard/rocky soils
  • Accepts anchor rods with 3/4” UNC male threads
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$ 107.19

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Expert Customer Serivce (907) 562-0707 M-F 8am-5pm in Alaska M-F 9am-6pm PST

Manta Ray anchors are driven into the earth in a low profile making easier to drive but when the drive steel is removed and the load locker pulls up on the anchor rod, the anchor will flip pulling on undisturbed cone of soil,  giving a better hold and less chance for long term creep.

An SGC 8' long drive steel kit is needed to install all Manta Ray Anchors with 1-1/8" or 1-1/4" hex head in either 4-1/4" or 6-1/4" chuck size. A 60# class or larger pavement breaker/jack hammer is recommended for installation.

The big unknown when installing earth anchors is the holding capacity of the soils. The LL-1 Load locker not only sets the anchor but also load tests the anchor to give you a reading as to quality of the soils and how much the anchor can hold.


Arctic Wire, Rope & Supply focuses on high quality products made in the USA.
We are one of the largest distributors in the Pacific Northwest of Crosby Products, Bridon American Wire Rope, Continental Western Cordage & Rope and Laclede Chain. We have nation-wide shipping options for all products

What We Do-

Arctic Wire Rope and Supply is Alaska's longest established and largest manufacturer of slings, chokers and bridles made of wire rope, cable, nylon web, polyester round and grade 10 chain. We do it all right here in Anchorage and were awarded the Alaskan Manufacturer of the Year in 2006.