Metal Backing Plates

Metal Backing Plates - Magnetic Backing Plates, Metal Thin Plates and PSA Backing Sets for Flat Lap Machines

Professional metal backing plates and mounting systems for flat lap machines, polishing machines, and angle grinders. Includes magnetic quick-change backing plates (6" to 24"), metal upper thin plates with PSA backing (6" to 12"), and PSA backing sets - providing secure, stable disc mounting for diamond flat lap discs, diamond smoothing pads, lapping film discs, and polishing pads on all standard flat lap systems.

Shop Metal Backing Plates

Product Type Guide

Product Type Mounting Method Sizes Price From
Magnetic Backing Plates Machine platen mount — magnetic disc attachment 6" - 24" $7.50
Metal Upper Thin Plate with PSA PSA adhesive mount — flat lap platen 6" - 12" $10.00
PSA Backing Set (5pcs) PSA adhesive — angle grinder / backing pad 6", 8" $8.00

Magnetic Backing Plates

Magnetic surface backing plates for instant tool-free disc changes on flat lap machines. Available in standard and 1/2" arbor configurations from 6" to 24".

Size Configuration Price
6" Standard / 1/2" arbor $7.50
8" Standard / 1/2" arbor $10.00
10" Standard / 1/2" arbor $15.00
12" Standard / 1/2" arbor $18.00
14" Standard / 1/2" arbor $22.00
16" Standard / 1/2" arbor $28.00
18" Standard / 1/2" arbor $45.00
24" Standard / 1/2" arbor $60.00

Metal Upper Thin Plates with PSA Backing

Precision metal thin plates with PSA backing for direct mounting on flat lap platens. Available in standard and 1/2" arbor configurations from 6" to 12".

Size Configuration Price
6" Standard / 1/2" arbor $10.00
8" Standard / 1/2" arbor $12.00
10" Standard $20.00
12" Standard $25.00

Key Features

  • Magnetic backing plates for instant tool-free disc changes — eliminates adhesive residue
  • Metal thin plates with PSA backing for stable, flat disc mounting on flat lap platens
  • PSA backing sets for angle grinder backing pads and flexible disc mounting
  • Standard and 1/2" arbor configurations for all flat lap machine types
  • 6" to 24" size range for bench machines through large production flat lap systems

Compatible Discs

Frequently Asked Questions

  • Q: What is the difference between magnetic backing plates and metal thin plates?
    A: Magnetic backing plates mount on the machine platen and create a magnetic surface for instant tool-free disc attachment — ideal for quick grit changes between grinding stages. Metal upper thin plates with PSA backing mount directly on the platen surface using pressure-sensitive adhesive, providing a flat, stable base for PSA-backed discs and lapping film.
  • Q: Standard vs 1/2" arbor — which do I need?
    A: Standard plates mount flat on the machine platen surface. The 1/2" arbor configuration has a center hole for machines with a 1/2" center post. Check your flat lap machine's platen mounting system before ordering.