Key Features & Components
Output Shaft Bearings
- Large, tapered roller bearings on most models for excellent start-up torque
- Designed for high load capacity and durability
Optional Flanges
- Interchangeable with other manufacturers
Gears
- Heat-treated alloy steel internal gears
- Heat-treated ductile iron or steel alloy ring gears
Lubrication
Proper lubrication is critical to planetary drive performance.
- Use EP 80/90 gear lube for most applications
- Maintain proper oil levels
- Change oil after first 50 hours of operation
- Change oil every 500 hours thereafter
- Reduces wear and maximizes bearing and gear life
- Failure to properly lubricate will void warranties
Service Factors
- Standard ratings based on 1.00 service factor (no recurrent shock loading)
- Adjust torque capacity using appropriate service factor
Load & Duration Guidelines:
- Occasional (½ hour): 0.80 (uniform), 1.00 (moderate), 1.50 (heavy)
- Intermittent (3 hrs/day): 1.00, 1.25, 1.75
- Up to 10 hrs/day: 1.25, 1.50, 2.00
- 24 hrs/day: 1.50, 1.75, 2.25
- Intermittent = less than 10% of each hour
Thermal Capacity
- May be less than mechanical capacity depending on load and cooling
- Prototype testing recommended
- Maximum operating temperature: 200°F
Safety Factor
- 2:1 static load safety factor at intermittent ratings
Back Driving & Brakes
- Back driving torque is critical in sizing drives and brakes
- Hydraulic systems must prevent “lock-up” or excessive deceleration torque
- Spring-applied, hydraulically released parking brakes often required
- Minimum holding torque: 115% of motor driving torque
- Maximum holding torque: 125% of motor driving torque
- Combined factors can create back driving torque exceeding 2× input torque