29 CFR 1910 · General Industry · Subpart O

1910.215(b)(5): Guard Exposure on Surface Grinders and Cut-Off Machines

By Black Belt Safety Editorial Team Official text as of octubre 15, 2026 Data updated octubre 20, 2026 3 min read

In plain words:

Employers must guard cutting-off machines and surface grinders that use the wheel periphery so that no more than 150 degrees of the wheel periphery and sides is exposed. That exposure must begin at a point not less than 15 degrees below the horizontal plane of the wheel spindle.

Key takeaways

  • 1910.215(b)(5) is part of OSHA's general industry standards (29 CFR Part 1910, Subpart O).
  • OSHA cited it 12 times in the last 3 years, in 12 inspections, with $16,645 in current penalties.
  • Most citations: IN (3), MN (2), AZ (1).
  • Related part: 1910.215(b) Guarding of abrasive wheel machinery (1,135 citations).
  • Free 5-minute toolbox talk for your crew below.
12citations, 3 years
$16,645current penalties
12inspections
0linked injury cases
In this article
  1. What this rule covers
  2. Official text
  3. Where and how often it was cited
  4. Free toolbox talk
  5. OSHA interpretation letters
  6. Related parts of this rule
  7. Get your crew competent
  8. Frequently asked questions
  9. About this page

What this rule covers

29 CFR 1910.215(b)(5) ("Surface grinders and cutting-off machines") is one requirement inside 1910.215 Abrasive wheel machinery, an OSHA general industry standard (Part 1910, Subpart O). The official text below is copied word for word from the Electronic Code of Federal Regulations (eCFR). The numbers, injury cases and training on this page show how OSHA enforces it on real job sites.

Official text

(5) Surface grinders and cutting-off machines. The maximum angular exposure of the grinding wheel periphery and sides for safety guards used on cutting-off machines and on surface grinding machines which employ the wheel periphery shall not exceed 150°. This exposure shall begin at a point not less than 15° below the horizontal plane of the wheel spindle. (See Figures O-12 and O-13) 12 citations

Source: eCFR, text current as of 2026-10-15. Read all of 1910.215.

Where and how often it was cited

YearCitations
20246
20254
20262

Top states: IN (3), MN (2), AZ (1), VA (1), NJ (1)

Largest penalties

EmployerLocationPenalty for this rule
JACK ROBINSON WASTE DISPOSAL SERVICES, INC.VOORHEES, NJ$6,000
SPEEDGRIP CHUCK CO.ELKHART, IN$2,730
WALSH STEELPLYMOUTH, MA$2,100
ARMOR METALSTAMPSOUTH BEND, IN$1,800
ATI PERFORMANCE PRODUCTS, INCBALTIMORE, MD$1,260

Free toolbox talk

A 5-minute crew talk on 1910.215(b)(5), plus alerts when this rule changes. Free.




OSHA interpretation letters

None exist. OSHA has not published a letter of interpretation for 1910.215(b)(5).

Related parts of this rule

Get your crew competent

Trainers on Black Belt Safety: Marc Harvey, Dana Reyes

Trainers and suppliers: feature your business on this rule for $25/month.

Frequently asked questions

How much of the wheel may be exposed on a cut-off machine?

The maximum angular exposure of the wheel periphery and sides shall not exceed 150 degrees.

Where does the exposed area begin?

At a point not less than 15 degrees below the horizontal plane of the wheel spindle.

Which machines does this cover?

Cutting-off machines and surface grinding machines that employ the wheel periphery.

About this page

Sources

3-year window. Federal OSHA only; state-plan rules are not counted. Plain-language text is a summary, not legal advice; the official text controls. Black Belt Safety is not part of OSHA or the Department of Labor.

Written and reviewed by

Black Belt Safety Editorial Team

Site Safety Officer and Safety Professional

OSHA 30 · CPR · USACE CQM

Written and reviewed by the Black Belt Safety team. Every post is checked against the OSHA standard or agency source it cites.

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