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The smaller roller in the pictures is 8-1/2" MH-3 Roller. It is to better illustrate the 12-1/4" size only.

MH-3H 12-1/4" Roller Bit

Best for the small hole and less chanlleging hard rock formation. 

Parameters:

  • Insert count: 74 pieces
  • Insert Size: 17mm
  • Body type: Flat auto angle body for quick fixing
  • Cone size: 191mm (with inserts)
  • Body width: 131mm
  • Connection type: Welding
  • Grease: Vacuum grease system special design for piling application
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Advanced Features

74 pieces 19mm large inserts cone head of MH-3H piling roller

74 Inserts

Covered with 74 pieces 17mm inserts. It is more than 60% more compare to the regular 12-1/4" roller bit and tricone cutters.

a bubble ruller attached to the MH-3 roller bits to demonstate the auto position method for the FIRMTECH 4th generation legs

Auto Angle Body

4th generation automatic positioning body will help you weld the roller with ease and confidence no matter on the site or in the workshop

double sealing grooves on the cone to illustate the sealing design

Double Sealing

additional to the traditional sealing, we apply another CNC surface as additional sealing to prevent the dust into the bearing

Hard alloy applied on the bearing to strength it

Bearing Hard Alloy Apply

All the roller bearings covered by the hard alloy to apply extra hardness

workers using special equipment making the roller bit inside vacuum then push the grease inside

Vacuum Grease System

Pull the air out of the body, then push the high end grease in, make sure the roller has enough grease for the whole life span

Other Model and choice

MH-1 roller bit in yellow painting with 47 inserts

MH-1

MH-2 traditional lege roller bit in yellow paint

MH-2

MH-3 FIRMTECH roller bit coverd in yellow painting with 52 large inserts and patented 4th generation leg special designed for bored piling application

MH-3

MH-3P Roller Bit from FIRMTECCH

MH-3P

MH-3H 12-1/4" big size FIRMTECH roller bit designed for big diameter bore pile

MH-3H

holder type FIRMTECH roller bit for quick replaceable

MH-3R

palte and bolt type FIRMTEH piling roller bit for quick replacement

MH-3B

Check and compare them all

What is the difference? Don’t know how to choose? Check it out >

Ask us more about the rollers

We have expert staying by for 7×24. Please tell a little more about your problem, situation, and requirements. We are happy to offer our insights and opportunies. You can expect a reply within 24 hours.

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