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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.

Highlights

  • 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

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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