How Should and Shall Non-Driven Idler Rollers Be Guarded?

Even though non-driven idler rollers do not actively power or move material, they still pose serious safety risks such as in-running nip points, pinch hazards, and entanglement. According to OSHA and ANSI standards, they must be guarded if they present a risk to employees.

OSHA Compliance (1910.212 – General Machine Guarding):

"One or more methods of machine guarding shall be provided to protect the operator and other employees from hazards..."

This applies regardless of whether the roller is driven. If a rotating or freely turning roller is accessible and can trap body parts, clothing, or tools, it shall be guarded.

ANSI B11.0 and B11.19 Standards:

• “Shall” = A mandatory requirement. If an idler roller poses a recognized hazard, it shall be guarded.

• “Should” = A recommended practice. Guarding is encouraged even in borderline cases to promote a proactive safety culture.

Best Practice Guarding Options:

• Fixed guards to block direct access

• Barrier guards around roller ends and pinch points

• Mesh panels or enclosures that allow visibility but prevent reach

• Presence-sensing devices for access-controlled zones (if applicable)

Summary:
If a non-driven idler roller presents a hazard, guarding is mandatory under OSHA. Even if not legally required in borderline cases, guarding is strongly recommended ("should") as part of best practices for injury prevention and compliance.