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Dayton 4Z719 speed reducer C-face 56C frame helical spur gears keyed output shaft horizontal mount

Dayton

Dayton 4Z719 Speed Reducer 56C 12.5:1 1 hp 140 RPM

SKU CH-YZ7D-CMVGY

A C-face helical-spur speed reducer with a 12.5:1 ratio delivering 140 RPM and 998 in-lb torque from a 1 hp motor

  • 1 hp input power drives up to 998 in-lb output torque
  • 5:1 helical-spur gearing reduces speed to 140 RPM
  • 56C C-face mount fits standard motor frames directly
  • 709 lb overhung load capacity handles heavy radial forces
  • Horizontal mounting with 4.5 in hole centres simplifies installation

Dayton 4Z719 Speed Reducer for 56C Motors

The Dayton 4Z719 is a helical-spur speed reducer built for a 56C motor frame. It delivers a 12.5:1 reduction with a maximum output speed of 140 RPM and handles up to 1 hp input. The unit suits horizontal mounting in general machinery applications.

Installation and common issues

The reducer uses a C-face input connection that bolts directly to a compatible motor. A keyed output shaft provides a positive drive for the driven load. Mounting holes are spaced on a 4.5 in center-to-center pattern. Misalignment during installation can reduce bearing life and increase vibration.

Practical limits of the helical-spur design

Maximum input speed is 1,800 RPM with a peak output torque of 998 in-lb. Overhung load capacity is rated at 709 lb at the shaft centre. The base-to-centre height is 4.88 in and overall height is 7.47 in. This unit is not suited for vertical mounting or applications exceeding the stated torque and speed limits.

How it compares

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

Price $924.99
Pricier than about 96% of the 693 comparable items (median $35.99).

Specifications

No published specifications for this item yet.

Questions about this item

How can I confirm the reducer is running correctly once installed?

Verify the output shaft turns at 140 RPM under load and that the torque does not exceed 998 in-lb. The unit should rotate smoothly in both CW and CCW directions without abnormal noise or vibration.

What comes in the box and what must I source separately?

The speed reducer itself is supplied. You will need to provide a 56C-frame motor, mounting hardware for the 4.5 in hole centres, a key for the keyed output shaft, and suitable lubricant before commissioning.

How do I decide which ratio or capacity matches my application?

Choose this 12.5:1 model when your motor runs at up to 1,800 RPM and you need 140 RPM output with up to 1 hp input and 998 in-lb torque. The 709 lb overhung-load rating must also cover your driven load.

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