Standard Motor
The workhorse of the industrial world.
Standard Motor
WhatsApp for 15-min engineer call
Warranty
1 Year Standard
Service
Covered by Warranty
Certified
ISO 9001:2015
Experience
24 Years
Product Overview
Our standard AC induction motors are squirrel-cage, totally enclosed fan-cooled (TEFC) machines built for continuous S1 duty in general industrial environments. The stator winding uses electrolytic-grade copper wire with Class F insulation rated to 155°C, providing a substantial thermal margin above typical operating temperatures. The rotor is die-cast aluminium, dynamically balanced to ensure vibration-free operation — critical for applications like precision pumps and fans where bearing life depends on smooth running.
Key Features
Technical Specifications
| Power Range | 0.25 HP to 20 HP |
| Voltage | 415V ± 10% |
| Frequency | 50 Hz ± 5% |
| Speed | 1440 / 2800 / 960 / 750 RPM |
| Insulation | Class F |
| Protection | IP55 |
Common Applications
Industries Served
Manufacturing & Assembly
Powers conveyor lines, material handling systems, and packaging machinery across automotive, FMCG, and discrete manufacturing plants.
Water & Wastewater
Drives centrifugal pumps, booster systems, and aeration blowers in municipal water treatment plants and industrial effluent facilities.
HVAC & Building Services
Operates supply and exhaust fans, AHU blowers, and chilled water pumps in commercial buildings, malls, and hospitals.
Food & Beverage Processing
Reliable motor drive for mixers, grinders, conveyors, and refrigeration compressors in food-grade environments.
Agriculture & Irrigation
Powers bore well pumps, chaff cutters, and grain processing equipment across rural and semi-urban installations.
Key Benefits
- Reduces unplanned downtime with robust construction rated for continuous S1 duty in ambient temperatures up to 50°C
- Lowers electricity costs through optimized stator design and high-grade CRGO laminations that minimize core losses
- Drop-in replacement with IEC standard frame dimensions — fits existing baseplates without modifications
Why Choose Our Motors
- Every motor is wound and tested in-house at our Odhav plant — no outsourced windings, no quality compromises
- 24+ years of manufacturing experience with 10,000+ motors deployed across 28 Indian states
- Technical support is available within 15 minutes — share your nameplate photo for exact replacement specifications.
Manufacturing & Quality
Manufacturing Process
Each standard motor is built through a 12-step manufacturing process at our Odhav facility. Starting with precision-stamped CRGO silicon steel laminations, the stator core is stacked and compressed under hydraulic press to minimize air gaps. Winding is done by experienced technicians using electrolytic-grade copper wire, with each coil tested for insulation resistance (minimum 100 MΩ) before assembly.
Quality Standards
- 100% insulation resistance testing (IR value ≥ 100 MΩ at 500V DC)
- High-voltage withstand test at 2kV + 1 for 60 seconds
- No-load current and power factor verification
- Vibration measurement to IS 12075 limits
- Dynamic balancing to ISO 1940 G2.5 grade
- Full-load performance testing on sample basis per IS 325
Certifications
Selection Guide
Choose the correct frame size by matching your driven equipment's shaft height and mounting dimensions to IEC standards. For constant-torque loads like conveyors, select a motor with at least 15% torque margin above the calculated load torque.
Recommended For
Comparison With Similar Motors
| Feature | Sun Star Motors™ | Typical Market Motor |
|---|---|---|
| Winding | Electrolytic-grade copper, hand-verified coils | Standard copper or aluminium winding |
| Insulation | Class F (155°C) with double-dip VPI | Class B or F with single-dip varnish |
| Bearings | FAG / SKF-grade sealed bearings | Generic or economy bearings |
| Testing | 100% IR, HV, no-load, vibration tested | Sample-based or no-load only |
| Voltage Tolerance | 415V ± 10% (designed for Indian grid) | ±5% tolerance standard |
| Lead Time | 24–48 hours ready dispatch from Ahmedabad | 7–15 days from factory |
Installation Guidelines
- Verify that the motor nameplate voltage, frequency, and speed match your power supply and application requirements before installation
- Mount the motor on a flat, rigid baseplate or foundation using all four foot bolts — tighten to the recommended torque values for the frame size
- Align the motor shaft with the driven equipment using a dial indicator or laser alignment tool — misalignment beyond 0.05mm causes premature bearing failure
- For belt-driven applications, ensure belt tension is within manufacturer specifications — excessive tension increases radial bearing load and shortens motor life
Maintenance Tips
- Grease bearings every 3,000–5,000 operating hours using lithium-based EP2 grease — do not over-grease as it causes overheating
- Check terminal connections every 6 months for loose contacts — tightening prevents hot spots and potential winding damage
- Clean the fan cover and cooling fins quarterly to prevent dust buildup that reduces cooling efficiency
- Monitor motor temperature during operation — a consistent rise above nameplate rated temperature indicates potential overload or ventilation blockage
Troubleshooting Guide
| Issue | Possible Cause | Solution |
|---|---|---|
| Motor does not start | No incoming power, blown fuse, tripped overload relay, or faulty contactor | Check power supply with a multimeter. Verify all three phases are present. Reset the overload relay. Inspect contactor contacts for pitting or welding. |
| Motor runs but overheats | Overloaded beyond rated HP, blocked ventilation, low voltage (below 415V −10%), or single-phasing condition | Measure the load current with a clamp meter — it should not exceed nameplate FLA. Clear obstructions from the fan cover. Check voltage at motor terminals under load. Verify all three phases are balanced. |
| Excessive vibration | Shaft misalignment, unbalanced coupling, worn bearings, or loose foundation bolts | Re-align motor and driven equipment. Check coupling condition. Replace bearings if vibration persists. Tighten all foundation bolts to specification. |
Warranty Information
All Sun Star Motors™ standard induction motors carry a 12-month warranty from the date of dispatch, covering manufacturing defects in materials and workmanship. Warranty includes free replacement or repair at our Odhav facility for motors found defective under normal operating conditions as specified on the nameplate.
Quality Assurance • Sun Star Motors™