Sumitomo Astero Fractional HP Geared Motors
The Sumitomo Astero® Geared Motor Series (featured model: A9M90KH-A9B180 90W 1:180 Ratio) is Sumitomo's versatile fractional horsepower drive platform, engineered specifically for compact automation, conveyor transfers, medical instruments, and commercial food equipment where high torque, low noise, and space-saving integration are essential. Featuring a modular design that allows motors and gearheads to be combined freely, the Astero series encompasses **Parallel Shaft Helical Gearheads** and **Right-Angle Hypoid Gearheads** across 4 compact frame sizes (60mm, 70mm, 80mm, and 90mm square flanges). Available in Continuous Duty AC Induction, Reversible (instantaneous direction change), Electromagnetic Brake, and Speed Control motor types (100V, 115V, 200V, 220V, and 230V AC mains), Astero gearheads provide wide gear reduction ratios from 3:1 up to 180:1 (expandable to 1800:1 with decimal gearheads). WE DRIVE HONGKONG LIMITED provides technical sourcing, model configuration decoding, and 100% direct replacement support for Sumitomo Astero motors across global manufacturing facilities.
Technical Specifications
| Featured Model | A9M90KH-A9B180 (90W Motor Power, 3-Phase 200/220/230V AC, 90mm Flange, 1:180 Ratio Parallel Gearhead) |
|---|---|
| Brand / Manufacturer | Sumitomo Drive Technologies (Sumitomo Heavy Industries) |
| Product Series | Astero® Series Fractional Horsepower Compact AC Geared Motors |
| Frame Flange Sizes Covered | A6 (60mm Square), A7 (70mm Square), A8 (80mm Square), A9 (90mm Square) |
| Motor Power Ratings | 6W, 15W, 25W, 40W, 60W, 90W Output Power (Single-Phase & Three-Phase AC Input) |
| Gearhead Architecture | Parallel Shaft Helical & Right-Angle Shaft Hypoid / Hollow Shaft Options |
| Reduction Gear Ratios | 3:1 to 180:1 Standard Ratios (Expandable up to 1800:1 with 1:10 Decimal Intermediate Gearheads) |
| Motor Types & Protection | Induction Motor, Reversible Motor, Fail-Safe Brake Motor; IP65 Terminal Box & Leadwire Enclosures |
Documentation & Resources
Sumitomo Astero Series Power, Frame & Ratio Selection Matrix
Complete selection matrix for Sumitomo Astero compact geared motors. Review frame sizes, motor power ratings, gearhead options, allowable torques, and model naming conventions:
| Frame Size (Flange) | Motor Power (W) | Gearhead Type | Max Allowable Torque | Gear Ratio Range | Sumitomo Model Code Example |
|---|---|---|---|---|---|
| A6 Series (60mm) | 6 W | Parallel Shaft | 2.5 Nm | 3:1 - 180:1 | A6M06KH-A6B18 |
| A7 Series (70mm) | 15 W | Parallel Shaft | 5.0 Nm | 3:1 - 180:1 | A7M15KH-A7B30 |
| A8 Series (80mm) | 25 W | Parallel / Right-Angle | 8.0 Nm | 3:1 - 180:1 | A8M25KH-A8B50 |
| A9 Series (90mm) | 40 W | Parallel / Right-Angle | 10.0 Nm | 3:1 - 180:1 | A9M40KH-A9B60 |
| A9 Series (90mm) | 60 W | Parallel / Right-Angle | 20.0 Nm | 3:1 - 180:1 | A9M60KH-A9B100 |
| A9 Series (90mm) | 90 W | Parallel / Right-Angle | 20.0 Nm | 3:1 - 180:1 | A9M90KH-A9B180 |
Sumitomo Astero Model Code Breakdown & Direct Replacement Guide
Decode your existing Sumitomo Astero nameplate code to configure exact motor and gearhead replacement combinations:
| Nameplate Code Segment | Code Option Example | Technical Specification / Function |
|---|---|---|
| Frame Size Code | A6 / A7 / A8 / A9 | Flange dimensions: A6 (60mm), A7 (70mm), A8 (80mm), A9 (90mm). |
| Motor Type Code | M (Induction) / R (Reversible) / B (Brake) | M = Continuous Induction, R = Reversible 30-min duty, B = Power-off Brake. |
| Output Power Code | 06 (6W), 15 (15W), 25 (25W), 40 (40W), 90 (90W) | Motor rated wattage output across single-phase or three-phase power supply. |
| Gearhead Model Code | A9B180 / A9C180 / A9H180 | A9B = Parallel Shaft, A9C = Right Angle Solid Shaft, A9H = Right Angle Hollow Shaft. |
Expert Technical Sourcing & Compact Drive Integration Notes
When replacing older compact Japanese geared motors on conveyor transfers, packaging machines, automated sorting lines, or lab instruments, switching to Sumitomo Astero motors delivers immediate advantages: high allowable overhung load, quiet precision gearing, flexible leadwire/terminal box configurations, and complete physical mounting compatibility. Simply provide us with your existing motor and gearhead nameplate codes (e.g., A9M90KH and A9B180), and our technical engineering team will deliver a 100% compliant replacement specification and proposal.
Core Benchmark Model Standard Configurations
- A6M06KH-A6B18 (6W 1:18 Ratio)
- A7M15KH-A7B30 (15W 1:30 Ratio)
- A8M25KH-A8B50 (25W 1:50 Ratio)
- A9M40KH-A9B60 (40W 1:60 Ratio)
- A9M60KH-A9B100 (60W 1:100 Ratio)
- A9M90KH-A9B180 (90W 1:180 Ratio)
- A8R25KH-A8B30 (25W Reversible)
- A9R60KH-A9B50 (60W Reversible)
- A9B90KH-A9B60 (90W Brake Motor)
- A9M90KH-A9H50 (90W Right Angle)
- Sumitomo Astero A6 Parallel Shaft
- Sumitomo Astero A7 Parallel Shaft
- Sumitomo Astero A8 Parallel Shaft
- Sumitomo Astero A9 Parallel Shaft
- Sumitomo Astero Hypoid Right Angle
- Sumitomo Astero Hollow Shaft Unit
- Sumitomo Astero Speed Control Motor
- Sumitomo Astero 100V Single Phase
- Sumitomo Astero 200V Three Phase
- Sumitomo Astero 1:10 Intermediate Gear
