3M 33392 Cubitron II Roloc Fibre Disc, 3 inch, 80+ Grit, Precision Shaped Ceramic, 20000 RPM, Purple, 15 Discs
- Designed for body shops and collision centers, these 3M Cubitron II quick-change fibre discs use Precision Shaped Ceramic grain to cut fast, run cool, and deliver long life on weld grinding, beveling, and paint removal—ideal for consistent results and fewer disc changes on steel and other metals.
- Features:
- Precision Shaped Ceramic (Cubitron II) abrasive for exceptionally fast cutting and long life
- Roloc TR quick-change attachment for rapid disc swaps and secure fit
- Stiff fibre backing and strong resin bond for durability and tear resistance
- Electrostatically oriented triangular grains for efficient cutting and even wear
- 3 inch (75 mm) diameter, 80+ grit for balanced stock removal and finish
- Purple color coding for easy grade identification
- Includes:
- Specifications:
- Manufacturer: 3M
- Part Number: 33392
- Series / Product Type: Cubitron II Roloc Fibre Disc 786C
- Abrasive Material: Precision Shaped Ceramic
- Grit: 80+
- Size: 3 in (75 mm) diameter
- Attachment Type: Roloc TR (quick change)
- Max Operating Speed: 20,000 RPM
- Color: Purple
- Package Quantity: 15 discs/carton
- UPC: 00051131333925
- 3M ID: 7100033192
- The Cubitron II Roloc Fibre Disc (33392) can also be referred to as quick change grinding disc, 3 inch 80+ grit fibre disc, ceramic precision shaped grain disc, Roloc TR sanding disc, and metal weld grinding disc.
3M is a global leader in abrasives for automotive repair and industrial metalworking. Its Cubitron II line features engineered Precision Shaped Grain that maintains sharp cutting points for faster throughput and longer life, helping shops reduce changeovers and improve finish quality.
Q: Will these discs fit my Roloc mandrel?
A: Yes, they use the TR (Roloc) quick-change button and mount to standard TR mandrels and compatible 3M disc pad face plates.
Q: What metals and tasks are they best for?
A: They’re optimized for medium to heavy-duty work such as weld grinding, edge beveling, and coating removal on common automotive steels and many alloys.
Q: How do I maximize disc life?
A: Pair with the recommended 3M disc pad face plate and apply moderate pressure—let the abrasive cut. Avoid excessive heat buildup and keep within the rated RPM.
Q: What safety limits should I follow?
A: Always use proper PPE and stay at or below the disc’s maximum rated speed (20,000 RPM) for this SKU. Inspect discs and backing pads before use.
