Overview
The Morse 237Q56R20 (XF1105) is a single-reduction worm gear reducer from the Raider Plus product line. This cast-iron reducer delivers a 20:1 gear ratio and is engineered for reliable power transmission in industrial automation, machinery drives, and material handling applications. The C-face quilled input design simplifies motor coupling while the right-hand output shaft configuration accommodates standard mounting arrangements.
Key Features
- Rugged Cast Iron Housing — Single-piece construction provides maximum structural strength and durability in demanding industrial environments.
- High Lead Angle Worm Gear — Case hardened, ground, and polished design ensures smooth, efficient power transmission with minimal wear.
- Large Single-Row Ball Bearings — Input shaft bearings absorb radial and thrust loads at higher input speeds, extending service life.
- Polyglycol Oil Lubrication — Optimized for thermal management and long-term gear protection.
- Industry Interchange Compatible — Dimensionally interchangeable with major competitor worm reducers, simplifying replacement and system integration.
Technical Specifications
The Morse 237Q56R20 delivers consistent performance across standard industrial duty cycles:
- Gear Ratio: 20:1 (single reduction)
- Input Power Rating: 1 hp
- Input Speed (Maximum): 1750 rpm
- Output Speed (Maximum): 87.5 rpm
- Input Torque: 83.91 in-lb
- Output Torque: 87.5 in-lb
- Efficiency: 80%
- Input Shaft Configuration: C-face quilled (5/8 in dia)
- Output Shaft Configuration: Right-hand solid shaft (1-1/8 in dia × 2.66 in length)
- Centre Distance: 2.37 in
- Input Keyway: 3/16 × 1.63 in
- Housing Material: Cast iron
- Lubrication Type: Polyglycol oil
- Mounting: Direct or floor mount
- Dimensions: 8.4 in (L) × 7.84 in (W) × 6.94 in (H)
Typical Applications
The Morse 237Q56R20 is suitable for:
- Conveyor drive systems and material handling equipment
- Packaging machinery and automated assembly lines
- HVAC fan drives and ventilation systems
- Industrial pump and blower applications
- General-purpose machinery requiring smooth, low-speed torque
- OEM equipment where space-efficient power transmission is required
Compatibility & Replacements
Compatible With
- NEMA motor frames with C-face mounting
- 1 hp, 1750 rpm three-phase and single-phase AC motors
- Direct-drive and floor-mounted machinery bases
- Systems designed for Raider Plus worm reducer integration
Replaces / Drop-In Replacement For
- Morse 237Q56R20 — exact model replacement
- Comparable 20:1 worm reducers from industry-standard manufacturers (verify dimensional compatibility with your equipment specifications)
- Legacy or equivalent reducers in the XF1105 series
Works With
- Standard industrial motors (AC, DC, servo compatible)
- Belt and chain drive systems
- Flexible couplings and shaft adapters
- Industrial control systems and variable frequency drives (VFDs)
- Brake and clutch assemblies rated for 87.5 in-lb output torque




