Where the WPA 100 Is Installed in Australia
The most widely specified cast-iron worm reducer in Australian heavy industry. Mining conveyor auxiliary drives across the Pilbara, water treatment clarifier scrapers in Queensland municipal facilities, sugar cane crushing auxiliary equipment, and heavy-duty gate valve actuators in dam infrastructure. At 35 kg with output torques reaching 291 Nm, the WPA 100 handles continuous industrial duty that aluminium gearboxes cannot sustain.
When to Choose This Model
The WPA 100 covers the 1.0-4.45 kW range. For 5.5 kW+ or sustained torques above 400 Nm, step to WPA 120. Choose cast iron over aluminium when the application involves sustained vibration, belt-tension side loads, outdoor installation, or ambient temperatures above 45 degrees C where aluminium thermal expansion affects bearing alignment.
For materials, configuration variants, efficiency data, lubrication, and selection methodology, refer to the WPA/WPS Series overview.
WPA 100 Specifications
Input speed: 1,500 RPM. All dimensions in mm.
Input Power & Output Torque (1,500 RPM)
| Ratio | Input Power (kW) | Output Torque (Nm) |
|---|---|---|
| 5:1 | 4.45 | 170 |
| 10:1 | 3.60 | 193 |
| 15:1 | 3.10 | 237 |
| 20:1 | 2.60 | 258 |
| 25:1 | 2.35 | 284 |
| 30:1 | 2.10 | 277 |
| 40:1 | 1.68 | 291 |
| 50:1 | 1.30 | 257 |
| 60:1 | 1.00 | 229 |
Values for WP, WPK, WPWK type configurations. For WPD variants (with motor flange), refer to the WPD power table on the series page. Contact our engineers for application-specific verification.
WPA 100 Housing Dimensions (mm)
| Model | A | AB | B | BB | CC | H | HL | M | N | E | F | G | Z |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WPA 100 | 322 | 190 | 254 | 169 | 100 | 336 | 100 | 190 | 270 | 155 | 220 | 25 | 15 |
Shaft Dimensions
| Model | Input HS | Input U | Input Key TxV | Output LS | Output S | Output Key WxY | Weight (kg) |
|---|---|---|---|---|---|---|---|
| WPA 100 | 50 | 25 | 7x4 | 75 | 38 | 10x4.5 | 35 |
Shaft direction options: A (input below), S (input above), O (output up), X (output down), Z (vertical). Default is direction A unless specified.
Output Shaft Radial Load Capacity (N) — Size 100
| Input RPM | 5:1 | 10:1 | 15:1 | 20:1 | 25:1 | 30:1 | 40:1 | 50:1 | 60:1 |
|---|---|---|---|---|---|---|---|---|---|
| 1500 | 1500 | 1260 | 1260 | 1600 | 1950 | 2000 | 2100 | 2500 | 2700 |
| 1000 | 1000 | 1350 | 1350 | 1700 | 2100 | 2200 | 2300 | 2700 | 3000 |
Radial load values at the midpoint of the output shaft. For loads applied at other positions, apply the correction formula from the series page.
Available Configurations for Size 100
The WPA 100 is available in all standard WP configuration variants. Each variant uses the same 100 mm centre distance worm gear set in a different housing and shaft arrangement.
| Variant | Box Type | Input | Output | Motor Flange | Hollow Shaft |
|---|---|---|---|---|---|
| WPA 100 | Whole | Solid shaft | Solid shaft | No | No |
| WPS 100 | Whole | Solid shaft (upper) | Solid shaft | No | No |
| WPO 100 | Whole | Solid shaft | Up direction | No | No |
| WPX 100 | Whole | Solid shaft | Down direction | No | No |
| WPDA 100 | Split | Motor flange | Solid shaft | Yes | No |
| WPDS 100 | Split | Motor flange (upper) | Solid shaft | Yes | No |
| WPKA 100 | Whole | Solid shaft | Solid shaft | No | Yes (output) |
| WPDKA 100 | Split | Motor flange | Solid shaft | Yes | Yes (output) |
| WPZ 100 | Whole | Solid shaft | Vertical | No | No |
P = whole (one-piece) housing. D = split (two-piece) housing with motor flange adapter. K = hollow output shaft for shaft-mounted installation. Specify variant code when requesting a quote.
Other Sizes in This Series
13 centre distances from 40 mm to 250 mm. Click any model for full specifications.