Surface Grinding Whee

Common Surface Grinding Wheel Size Comparison Table

Wheel Size (D×T×H)	Compatible Grinder Model	Core Processing Scenarios
180 × 19 × 31.75 mm	618 Small Precision Surface Grinder	Precision finishing & mirror polishing of micro parts, jigs and mold inserts
200 × 20 × 32 mm	200 Small Surface Grinder, Manual Grinder	Surface grinding of small hardware parts, standard components and miniature mold parts
250 × 25 × 32 mm	Surface Grinder, M6125 Semi-automatic Surface Grinder	Batch grinding of conventional mold plates, stamping parts and mechanical accessories
300 × 32 × 75 mm	7130 Surface Grinder (Most Popular)	Rough and finish grinding of medium and large mold plates, tooling fixtures and templates
350 × 40 × 75 mm	7135 Heavy-duty Surface Grinder, CNC Surface Grinder	Heavy stock removal, high-power grinding of thick mold plates and heat-treated hard materials
400 × 50 × 127 mm	7140 Large Surface Grinder, Full-automatic Surface Grinder	In-depth batch processing of large mechanical plates, frames and heavy-duty molds
150 × 16 × 32 mm	Mini Manual Grinder, Precision Bench Grinder	Ultra-precision grinding of probes, electronic parts and micro jigs

Abrasive Selection Comparison Table for Surface Grinding Wheels

Abrasive	Core Features	Suitable Workpiece Materials	Applicable Industries
WA（White Aluminum Oxide）	Moderate hardness & good toughness, stable cutting, highest versatility, low burn risk, cost-effective	45# steel, alloy steel, tempered steel, bearing steel, cast iron, general mold steel	General hardware, mechanical parts, standard molds, auto components, stamping plates
（RA/PA）Pink Aluminum Oxide	Contains chromium, finer grinding texture, better polishing than WA, superior surface finish without rough scratches	Heat-treated mold steel, stainless steel, precision thin plates, punches, fixtures, small precision jigs	Precision molds, medical devices, precision electronic jigs, high-end stamping parts
（32A）Single Crystal Aluminum Oxide	Strong single-crystal grain toughness, anti-fracture, low heat under heavy stock removal, longer service life	Hardened high-tensile steel, high-toughness alloy, thick mold plates, heat-treated hard blanks, wear-resistant tooling	Large molds, engineering machinery parts, heavy stamping molds, heat treatment factories
（CX）Microcrystalline Aluminum Oxide	Ultra-fine microcrystalline grains, micro-cutting, minimal grinding heat, mirror flat surface, stable dimensional accuracy	Ultra-thin precision steel plates, probes, semiconductor carriers, optical molds, micro precision components	Semiconductors, precision instruments, optical parts, micro electronics, high-precision stamping
（GC）Green Silicon Carbide	Ultra-high hardness & sharp cutting, for hard non-metals, not for hard steel, ideal for tungsten carbide sharpening	Tungsten carbide, carbide cutting tools, ceramics, graphite, magnetic steel, glass, hard non-metals	Cutting tool manufacturing, ceramic processing, graphite electrode machining, carbide mold sharpening
（C）Black Silicon Carbide	Low cost, better toughness than GC, less wheel clogging during rough grinding of soft non-ferrous metals	Aluminum, copper, zinc alloy, cast iron, stone, plastic, soft non-metallic sheets	Non-ferrous rough machining, sheet metal rough grinding, stone processing, low-cost general grinding