Keystone IndustriesShips in 3 business days
Keystone Econo Cutter Discs · #1 Large, 2-1/2"
SKU 010-1122MFR# 1300480
Size
#1 Large, 2-1/2"
The Keystone 539A Econo Cutter Disc is a rotary finishing and polishing instrument. It is specifically designed for cutting applications in dental and lab environments, providing controlled material removal during finishing procedures.
This #2 Small disc measures 1-1/2 inches in diameter with a .035 inch thickness. Engineered as a single cutter disk, it is suitable for use at speeds up to 24,000 RPM, making it appropriate for precise shaping and reduction tasks.
Product
- Manufacturer
- Keystone Industries
- Manufacturer #
- 1300480
- Item code
- 010-1122
Catalog path
- Marketplace
- Laboratory
- Category
- Lab Burs & Rotary
- Subcategory
- Finishing & Polishing Discs
Ordering
- Status
- Ships in 3 business days
More from Finishing & Polishing Discs
Stocked in the same subcategory.
Questions
What is Keystone Econo Cutter Discs used for?
The Keystone 539A Econo Cutter Disc is a rotary finishing and polishing instrument.
Which size options are on this page?
This page carries 3 size options: #1 Large, 2-1/2", #2 Small, 1-1/2", #3 X-Large, 4". Pick one to see its price, part number and stock.
When does it ship?
In-stock orders placed before 3 PM ET ship the same day; anything not on our shelf ships within 3 business days.Ground shipping is free over $10.
About separating and cut-off discs
A cutting-off wheel is a thin wheel used for cutting, cutting off, grooving and slotting. OSHA notes that cutting-off wheels may be steel centred, diamond abrasive or organic bonded abrasive.
The FDA groups abrasive discs, abrasive points, polishing strips and polishing wheels as abrasive devices, Class I (21 CFR 872.6010): they remove excess restorative material and smooth rough surfaces, on a shank held by a handpiece.
OSHA's general-industry rules define a disc wheel as a rotating disc faced with abrasive and used on its side.
How the types on this shelf differ
- Separating & Cut-Off Discs — A thin wheel for cutting, where an abrasive disc works on its side.
- Abrasive Discs — Grinds and smooths with its face.
- Polishing Discs — The finer steps of the same series.
- Buffing Wheels — Carries the polishing agent to the work.
- Grinding Wheels — The coarse step: it shapes the work and removes excess material.
- Flexible Silicone Polishers — The abrasive is embedded in a flexible silicone body.
- Polishing Wheels — A wheel for the smoothing steps that follow grinding.
What to look at when choosing a disc
Mandrel and bore: ISO 13295 covers the mandrels that carry discs and polishers. ISO 10323 sets the bore diameters that make discs and mandrels interchangeable.
Sequence: a review describes polishing in three stages, coarse finishing, intermediate polishing and final polishing. Coarse tools shape the work and remove excess material; medium ones smooth out the grooves and scratches the coarse ones leave.
Speed: OSHA's abrasive-wheel rule has the spindle speed checked against the maximum operating speed marked on the wheel.
Reuse: the CDC states that burs, polishing points and rag wheels used on contaminated appliances or prostheses should be heat-sterilised, disinfected between patients, or discarded.
Sources: FDA 21 CFR 872.6010, Abrasive device and accessories · OSHA 29 CFR 1910.94, Ventilation (grinding, polishing and buffing operations) · OSHA 29 CFR 1910.211, Machinery and machine guarding: definitions · The Glossary of Prosthodontic Terms, 9th edition (J Prosthet Dent 2017) · Rao et al. 2015, Surface roughness of three heat-cured acrylic denture base resins with different conventional lathe polishing techniques (J Indian Prosthodont Soc) · A Comprehensive Review of the Surface and Chromatic Properties of Monolithic Zirconia: Polishing and Finishing Methods (Cureus 2024) · Does Sterilization Affect the Performance of Single-Step Resin Composite Polishers? (Dent J 2023) · ISO 13295:2007, Mandrels for rotary instruments · ISO 10323:2013, Bore diameters for rotary instruments such as discs and wheels · OSHA 29 CFR 1910.215, Abrasive wheel machinery · CDC, Guidelines for Infection Control in Dental Health-Care Settings, 2003 (MMWR 52 RR-17)
