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Servo
Gearboxes
Planetary,
Hypoid & Bevel
Gearboxes - Introduction
The Reliance Gearbox range has precision planetary gearboxes, both with standard backlash and low backlash options. These gearboxes can be supplied fitted with a Reliance Cool Muscle Motor or, alternatively standard NEMA 17 or 23 adapter plate to suit virtually any industry standard motor.
For right angle motion, hypoid gearboxes and bevel gearboxes are available with various input and output shaft options.
For applications where accuracy is not critical, Reliance Epicyclic Modules can be mounted inside a bespoke housing and their unique design allows various modules to be plugged together to achieve larger reduction ratios.
Gearboxes Come In The Following Styles
Planetary
Reliance Planetary Gearboxes are designed specifically to suit NEMA 17 and NEMA 23 motors.
Ratios from 3:1 to 512:1 with maximum output torques up to 123Nm. The RGPN70 low backlash unit offers less than 3 arc minutes of backlash.
Precision machined gear profiles, case hardened and honed for higher load capacity, low noise, minimum wear and consistent backlash.
A balanced motor shaft clamping ring allows high input speeds up to 18,000rpm
Hypoid & Bevel
Reliance Hypoid Gearboxes are fully sealed with an aluminium alloy casing, stainless steel shafting and offer ratios of 5:1 or 10:1.
Reliance Bevel Gearboxes are available with either a single or double output shaft design with ratios of 2:1 and 1:1 available. Using high quality bevel gears the backlash of an assembled gearbox is around 15 arc minutes. The gearboxes are manufactured with pre-tapped holes for alternative mounting arrangements and high quality grease giving lifetime lubrication and low maintenance
Epicyclic Modules
Reliance Epicyclic Modules are available in ratios of 3:1, 4:1 and 5:1. Their unique design allows the units to be stacked together providing higher ratios.
Efficiencies of 98% per single unit and 95% for two units coupled together are achievable.
The inherent problem of load sharing with planetary gear systems is solved by the use of pitch disks which are designed to equalise the load of each planet gear.
Gearbox Range
Gearbox Features
Low Backlash
Reliance Gearboxes are available in various backlash grades as follows:-
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RGP40: 24-30 arc minutes depending on number of stages.
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RGP60: 16-22 arc minutes depending on number of stages.
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RGPN70: 3-5 arc minutes depending on number of stages.
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BS Bevel Gearboxes: 15 arc minutes (except type 35L)
Long Life
Fully enclosed Reliance Gearboxes are lubricated for life and require no additional maintenance.
Performance specifications for each unit are detailed in the PDF datasheets above.
