Prox Company, Inc.


Conical Block
This standard duty, no-sleeve miner block for 1" shank bits that are held by a hose clamp or hair-pin keeper can be bottom drilled for accurate placement.

Radial Blocks
Strong, dependable performance from:
7620, 1" x 1-5/8" bit - Q Retainer
7621, 1" x 1-5/8" bit - Button
2802 forging available with 1/2" x 1" or 5/8" x 1-1/8" bit hole for set screw, roll pin or Q retainer.

Replacements for Joy Continuous Miner Chains

AA Link
14 CM10AA miners-type chains

  • We can meet your specific needs with the availability of several lacing patterns.

JCM Link
Our 12 & 14 CM type chains are interchangeable with those available from the original manufacturer.

  • We can meet your specific needs with several lacing patterns.
  • We have the ability to make the lacing chart you need.
  • You get the strength and performance you need from precision-machined alloy components.
  • All items are atmospherically heat treated to exacting specifications for strength and durability.

Lee-Norse & Hi-Wall Miners

  • We can supply trim chains for Lee-Norse 245 & 285 miners, as well as Hi-Wall miners.
  • Contact us for more information

AA Link

JCM Ripper Link

Lee Norse

Conveyor Chains

Heavy duty, 2-3/4" pitch (27.5" & 36" widths)

Standard duty, 2-5/8" pitch (22.5" & 27.5" widths)

  • Heat-treated alloy forgings for strength and durability.
  • Heat-treated alloy forgings for strength and durability. Special alloy HY-TUF® pins.
  • Available in any length to meet your specific needs.

Cutter Chains
Prox offers the following 3 bit style chains
to serve your cutting need.

PLUMB BOB BIT, For .74 and .80 mini bobs

Q RETAINER, 5/8" x 1-1/8" bit

SET SCREW, 1/2" x 1" bit

Cutter chain lengths using Prox cutter bars
and 6 tooth sprockets.


  • 9' Bar   --   48 Blocks
  • 10' Bar   --   52 Blocks
  • 11' Bar   --   56 Blocks

For use on other brand cutter bars, add one extra block. Also add one extra block when used with 7 tooth sprockets.

Click here to download a detailed information sheet, complete with ordering instructions (Adobe PDF).

Why you should buy a PROX Cutter Bar!

  • For extra strength and hardenability, cutter bars are fabricated with 40/50 carbon steel plates.
  • Smooth operation is ensured by precision machining of the cutter bars after fabrication for proper fit.
  • You get greater cutter bar and cutter chain tonnages because all wear surfaces are flame hardened or hard faced.
  • You get maximum life from solid-strip cutter bars and no downtime from broken or lost wear strips. The hanger can be remounted on the opposite side of the bar for extended life.
  • Cutterheads are alloy steel, CNC machined for proper fit and heat-treated in atmospheric furnaces for maximum strength and durability.
  • Special order cutter bars are also available for your individual mining needs on request.