Overview
The Bayside RA115-005-LB is a precision right-angle gearbox from Parker’s legacy Bayside line. With a 115mm frame size and 5:1 gear ratio, this unit delivers smooth power transmission at 90 degrees, ideal for applications requiring compact torque multiplication. The low-backlash (“-LB”) variant minimizes lost motion, critical for accurate positioning tasks in industrial automation.
Key Features
- Right-angle output configuration for compact vertical or perpendicular shaft mounting
- 5:1 speed reduction ratio with precise torque multiplication
- Low backlash design reduces positioning error and play
- 115mm frame size compatible with standard motor flanges
- Straight-cut through-hardened gears for reliable long-term operation
Technical Specifications
This gearbox delivers consistent performance across standard industrial duty cycles. The compact footprint suits confined spaces where conventional motor-gearhead assemblies are impractical. No external cooling required; natural convection and periodic lubrication ensure durability in standard ambient conditions.
Typical Applications
- Rotary table indexing and positioning systems
- Material handling conveyor drives
- Vertical load-holding and lifting mechanisms
- Machine tool spindle speed reduction
- Automated assembly line motion control
Compatibility & Replacements
Compatible With
- Standard AC and DC motors with matching flange sizes (NEMA 56C-180T frame motors typical)
- Right-angle drive applications requiring 90° output shaft orientation
- Industrial automation platforms using direct motor coupling
Replaces / Drop-In Replacement For
The RA115-005-LB is a legacy product no longer in production. Modern Parker Bayside alternatives include the PX115-005-S2 and RX115-005-S2 (Stealth series), which offer the same output face dimensions and bolt-on compatibility while providing improved efficiency, lower noise, and extended service life through plasma-nitride helical gear technology.
Works With
- Flexible couplings (jaw, disc, or bellows types) rated for 5:1 torque multiplication
- Direct motor flange mounting on 56C-180T frame sizes
- Standard ISO 68/100 gearbox oils (verify lubrication interval with Parker)






