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Dayton 4Z615 speed reducer, C-face 56C mount, grey cast-iron housing, keyed output shaft

Dayton

Dayton 4Z615 speed reducer 56C 38.5:1 0.5 hp 45 RPM

SKU CH-V1NQ-NMW3F

A C-face speed reducer with a 38.5:1 ratio delivers 45 RPM output at 0.5 hp for 56C frame motors

  • Delivers 665 in-lb torque at 45 RPM output
  • 5:1 helical-spur gear ratio cuts speed precisely
  • 56C C-face mount fits standard NEMA motors directly
  • Rated for 0.5 hp input at 1,800 RPM max
  • 863 lb overhung load capacity handles heavy radial forces

Application Fit

The Dayton 4Z615 is a right-angle speed reducer built for 56C-frame motors up to 0.5 hp. Its 38.5:1 helical-spur gearing drops 1,800 rpm input to 45 rpm output while delivering 665 in-lb of torque. Horizontal mounting and a keyed output shaft suit conveyors, mixers and similar inline driven equipment.

Sustained Load Behaviour

Ball bearings and helical-spur gears keep efficiency stable during continuous duty at the rated 0.5 hp. The 863 lb overhung-load rating supports direct-coupled pulleys or sprockets without separate bearing blocks. CW/CCW rotation is handled by the same unit, simplifying spare-part stocking for reversible drives.

Deciding Specification

The fixed 38.5:1 ratio and 45 rpm maximum output speed determine whether this reducer matches the driven machine’s speed requirement; a different ratio would need a different unit. Buyers who need variable output speed or a higher final rpm cannot use this model.

How it compares

Measured against everything we stock in Bearings, Belts & Drive Components, at today’s prices. Recalculated every night.

Price $785.99
Pricier than about 95% of the 693 comparable items (median $35.99).

Specifications

Product
Brand nameDAYTON

Questions about this item

How much heat or noise does the 0.5 hp 38.5:1 reducer generate during continuous operation?

The unit uses ball bearings and helical spur gears rated for 1,800 RPM input, so heat and noise stay within typical industrial gearbox levels for a 0.5 hp load.

What motor frame and shaft must I already have to bolt this 56C reducer directly to the motor?

You need a NEMA 56C face motor with a keyed output shaft that matches the reducer's C-face input and 38.5:1 gear ratio.

Will the 4.88 in base-to-center height and 4.5 in mounting-hole spacing line up with my existing 56C equipment?

Yes, the 4.88 in base-to-center dimension and 4.5 in hole centers follow standard 56C footprints, so it fits legacy mounting patterns.

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