# OSHA 29 CFR 1910 Subpart O — Machinery and Machine Guarding
# Quelle: https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910SubpartO
# Lizenz: US Federal Law — Public Domain
# Geladen: 2026-05-09

## 1910.211 — Definitions
Definitionen fuer Woodworking, Abrasive Wheels, Rubber/Plastics Mills, Power Presses, Forging, Power Transmission.

## 1910.212 — General Requirements for All Machines
- (a)(1) Guarding: barrier guards, two-hand tripping, electronic safety devices
- (a)(2) Guards affixed to machine, must not create hazards
- (a)(3) Point of operation guarding: guillotine cutters, shears, power presses, milling, saws, jointers, portable tools, forming rolls
- (a)(4) Revolving equipment: interlocked enclosure
- (a)(5) Fan blades below 7 feet: guards with max 1/2 inch openings
- (b) Fixed machinery anchoring

## 1910.213 — Woodworking Machinery
- Machine construction: no excessive vibration, secure bearings
- Controls: accessible power cutoff, locking belt shifters, anti-restart
- Hand-fed ripsaws: complete hoods, spreaders, non-kickback devices
- Crosscut saws: hood requirements
- Radial saws: upper/lower blade guarding, forward travel stops
- Bandsaws: full wheel encasement (0.037" min wire mesh)
- Jointers: automatic guards, max 2.5" throat, knife projection limits
- Shapers: cage or adjustable guards
- Sanding machines: feed roll guards, enclosed drums

## 1910.214 — Cooperage Machinery
[Reserved]

## 1910.215 — Abrasive Wheel Machinery
- Safety guards required (except internal work, mounted wheels ≤2")
- Angular exposure: bench/floor max 90°, cylindrical max 180°, surface/cutting max 150°
- Flanges: min 1/3 wheel diameter
- Speed limits: ≤8000 SFPM cast iron OK, 8000-16000 cast/structural steel
- Ring test before mounting
- Work rests: max 1/8" opening

## 1910.216 — Mills and Calenders (Rubber/Plastics)
- Top rolls min 50" above operator level
- Safety trip controls: pressure-sensitive body bars, triprods, tripwire
- Stopping limits: mills ≤1.5% peripheral speed, calenders ≤1.75%
- Manual reset required (no automatic)

## 1910.217 — Mechanical Power Presses
- Brakes: self-engaging
- Clutches: single-stroke with compression springs
- Two-hand controls: concurrent use, antirepeat
- Point of operation: Table O-10 max permissible openings
- Guard types: die enclosure, fixed barrier, interlocked, adjustable, presence sensing, pull-out, two-hand
- PSDI mode: light curtain, annual certification, min safety distance
- Injury reporting to OSHA within 30 days

## 1910.218 — Forging Machines
- Periodic inspection with documented certification
- Ram blocking during die changes (Table O-11)
- Tongs sufficient length to prevent kickback contact
- Scale guards at hammer/press backs
- Safety cylinder heads, quick-closing emergency valves
- Power lockout requirements

## 1910.219 — Mechanical Power-Transmission Apparatus
- Belts: guard if ≤7 feet from floor, 15" above belt minimum
- Overhead belts: full enclosure if >1800 ft/min or >8" wide
- Pulleys: guard if ≤7 feet, no cracked/broken pulleys
- Shafts: stationary casing ≤7 feet, projecting ends smooth with caps
- Gears: complete enclosure or 7-foot guard extending 6" above mesh
- Sprockets/chains: enclosure unless >7 feet
- Inspection: max 60-day intervals
