VR 589 Zirconia Resin Sander Disc with Top Coat

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The VR 589 is a zirconia alumina fiber disc with supersize Top Coat, built for speed and endurance on stainless steel, mild steel, and tough alloys where the job demands sustained aggressive cutting without workpiece discolouration. Premium zirconia grain cuts fast and self-sharpens under load; active fillers and the heat-reducing Top Coat keep grinding cool and consistent. In production testing on SS/MS weld at 6,500 RPM: 20% better material removal than the competing disc, with reduced operator fatigue.

Key Specifications

Dimension 104 × 16 mm (4" × 5/8") | 115 × 22.23 mm (4.5" × 7/8") | 125 × 22.23 mm (5" × 7/8") | 180 × 22.23 mm (7" × 7/8") | 230 × 22.23 mm (9" × 7/8")

Backing Type Vulcanised fiber

Type of Grain Zirconia Alumina + Premium Aloxide

Type of Coating Close Coat

Grit Ranges

100

120

Brand: CUMI

Information Material:

Product Catalogue

Additional Details

Type of Usage Machine Sanding

Bond Type Resin

Grid Range Extra Coarse to Medium

Speciality Super size

Shelf Life 2 Years from the Date of Manufacture

Product Information

Features

- Premium zirconia alumina and premium aloxide blend grain on 0.8/0.85mm vulcanised fiber backing with supersize Top Coat and close coat

- Top Coat technology reduces heat build-up, improves surface finish quality, and extends disc life on sustained SS and MS grinding

- Next Generation Resin Bond enhances grain adhesion and disc integrity under stress

- grain stays locked in during heavy weld removal

- Active fillers enable cooler cutting, reducing workpiece discolouration and operator fatigue on long grinding sessions

Benefits

- Self-sharpening zirconia grain delivers fast, aggressive cutting that holds its rate across the full disc life

- no gradual slowdown forcing the operator to increase pressure

- Top Coat and active fillers keep the grinding zone cool

- no discolouration on stainless weld zones, less heat transmitted to the operator's hands

- Next Generation Resin Bond maintains disc integrity under the stress of heavy SS and MS weld removal

- no grain pull-out mid-job

- 20% better material removal on SS and MS weld applications tested at 6,500 RPM

- More components per disc, fewer changeovers per shift

Advantages

- Active fillers in the bond system are what separates VR 589 from a standard zirconia disc

- they reduce heat generation at source, not just at the surface, which is why both the workpiece and the operator benefit

- 20% better material removal in production testing on SS/MS weld at 6,500 RPM

- the performance holds across both substrate types, not just optimised for one

- Supersize Top Coat extends operational disc life beyond standard zirconia on sustained heavy grinding

- measurably lower disc consumption per shift

Product Uses