BRUIN Backer Pad – 4 in., Aluminum Body
BRUIN Backer Pad – 4 in., Aluminum Body
The BRUIN Backer Pad is a 4 in. backer pad with an aluminum body, used to carry 4 in. polishing discs on a grinder or polisher.
It is the stiffest of the four 4 in. backer pads in this line – aluminum, rigid, plastic, flexible and super flexible – and the metal body does not flex under hand pressure, so the disc stays flat and cuts across its whole face instead of digging in at the edge. The attachment on this pad is not published: neither the thread size nor whether the face is hook-and-loop or snail-lock is stated in any source we hold, so check it against your machine and your discs before ordering.
Key Features
- Aluminum body – no flex, so the disc face stays flat on flat work
- 4 in. pad, sized for 4 in. discs
- The stiffest of the four backer pads in this line; the flexible and super flexible pads sit at the other end of the ladder
- Attachment thread and face type are not published for this pad and are not stated here
What's Included
- 1 x 4 in. backer pad
Who Is This For?
Fabricators polishing flat surfaces – tops, splashes and flat panels – where a soft pad would let the disc roll over the edge. It is the wrong pad for shaped work: on a bullnose, an ogee or a tight inside radius the aluminum body cannot follow the profile, and the BRUIN Backer Pad – 4 in., Flexible or the Super Flexible version should be used instead. If you need a pad whose thread is published before you buy, the Diamax Aluminum Backer Pad – 4 in., 5/8-11 Thread states it.
Frequently Asked Questions
What makes an aluminum backer pad different from a rigid plastic one?
An aluminum backer pad has a metal body that does not flex at all, while a rigid plastic pad still gives slightly under load. Both are stiff pads intended for flat work; the difference is the body material.
What size discs does a 4 in. backer pad take?
A 4 in. backer pad is sized for 4 in. polishing discs.
Which backer pad should I use on curved edges?
A flexible or super flexible pad, because the body has to bend to keep the disc in contact with the profile; a stiff aluminum-bodied pad cannot follow a curve.
Which 4 in. backer pads in this catalogue publish their thread?
The Diamax Aluminum Backer Pad – 4 in. is listed with a 5/8-11 thread, and the Alpha Rigid Backer Pad – 4 in. is listed with a 5/8 in.-11 thread and a hook and loop face.