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Dayton limit switch lever arm, 3 in metal arm with front nylon roller 0.75 in diameter

Dayton

Dayton 12T866 Limit Switch Lever Arm 3 in

SKU CH-RBDV-E7CJQ

Standard roller lever arm with 3 in length, .75 in nylon roller, fits 11X439, 11X440, 11X444, 11X446, 11X451, 11X454, 11X486, 12T835, 12T836, 12T837, 12T886, 12T887, 12T888, 12T889, 12T895, 12T896.

  • Product typeIndustrial Electrical Controls & Automation
  • 3 in arm length positions the roller for reliable actuation
  • Nylon roller reduces friction and resists wear during repeated cycles
  • Front roller placement aligns with standard limit switch mounting
  • 75 in roller diameter suits common industrial control applications
  • Compatible with Dayton 11X and 12T series limit switches

3-Inch Roller Lever Arm

This Dayton limit-switch lever arm provides a three-inch actuation reach for industrial control panels. The front-mounted nylon roller measures 0.75 inches in diameter and 0.25 inches wide. It mounts directly to compatible Dayton switch bodies without additional brackets. The arm suits automated machinery requiring reliable mechanical triggering.

Sustained Actuation Durability

The nylon roller resists wear during continuous cycling on conveyor lines or packaging equipment. Its 0.64-inch arm depth maintains structural rigidity under repeated side loads. The standard roller profile reduces friction against cam surfaces compared with bare metal arms. This construction supports long service intervals in high-cycle environments.

Compatibility Constraints

The lever arm fits only the listed Dayton switch models including 11X439, 11X440, 11X444, 11X446, 11X451, 11X454, 11X486 and the 12T835 through 12T897 series. It will not operate with switches outside this manufacturer range. Builders needing different arm lengths or roller materials must select a separate part number.

How it compares

Measured against everything we stock in Electrical Switches & Dimmers, at today’s prices. Recalculated every night.

Price $16.99
Cheaper than about 84% of the 791 comparable items (median $39.99).

Specifications

Product
Brand nameDAYTON
Product typeIndustrial Electrical Controls & Automation

Questions about this item

How much heat or noise does the 3 in lever arm generate when the limit switch runs continuously?

The lever arm itself is a passive metal component with a nylon roller, so it produces no heat or noise during continuous operation.

Which existing limit switch models must I already own for this 12T866 lever arm to fit?

It is designed for use with Dayton models 11X439, 11X440, 11X444, 11X446, 11X451, 11X454, 11X486, 12T835, 12T836, 12T837, 12T886, 12T887, 12T888, 12T889, 12T895, 12T896 and 12T897.

Will the .75 in nylon roller on this arm work reliably with older Dayton switches that originally used a metal roller?

Yes, the front-mounted .75 in diameter nylon roller is a direct replacement for the original roller on compatible Dayton switches and maintains the same actuation profile.

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