WPS Single Speed Cast Iron Worm Gearbox — WP Series

Overhead motor mounting — where the motor sits above the gearbox with its shaft pointing downward — is one of the most space-efficient drive configurations for conveyors, mixers, and processing equipment with restricted floor space. However, it demands a gearbox engineered specifically for top-entry input: correct oil distribution for the S-type shaft orientation, verified bearing arrangements for upward input shaft loads, and dimensional compatibility with overhead motor mounting brackets. The WPS Single Speed Cast Iron Worm Gearbox is purpose-built for exactly this configuration, with the S-type input shaft entering from above, delivering the same 17–2,371 Nm output torque range as the WPA in a drive layout that recovers valuable floor space in factories, packaging halls, and processing plants.

✉ Request a Quote  |  About Ever-power

■ S-Type Input: Shaft Enters From Above — Purpose-Built Geometry

The WPS worm shaft geometry is engineered for upward input entry, with bearing preloads and oil channels configured for S-orientation. This is not a field-modified WPA — it is a purpose-designed input configuration with fully optimised internals.

■ Vertical Motor Mounting Bracket Compatibility

The WPS housing geometry accommodates standard vertical motor mounting brackets without custom fabrication, giving machine designers a turn-key overhead drive solution from standard catalogue components.

■ Identical FC20+ Housing — Same Ruggedness as WPA

The S-type input modification does not alter the housing material grade or wall thickness. All WPS units retain the full FC20+ cast iron mechanical specification, providing identical impact resistance and thermal performance.

■ Oil Lubrication Verified for S-Orientation

The internal oil distribution channels are specifically validated for the S-input orientation. Oil fill levels are adjusted to compensate for the different worm submersion depth in this configuration.

■ Bilateral Input Shaft — Left or Right Motor Connection

Even in the S-type orientation, the input shaft exits from both sides, allowing the motor to connect from the left or right of the gearbox without affecting the overhead shaft entry direction.

■ Full Ratio Range 1/5–1/60 Maintained

All 9 standard ratios (1/5, 1/10, 1/15, 1/20, 1/25, 1/30, 1/40, 1/50, 1/60) are available in the WPS, giving designers the same selection flexibility as the horizontal-input WPA.

⚔ Overhead Drive Conveyors

Conveyors where the motor must mount above the gearbox — particularly common in food processing facilities with strict hygienic zone layouts — use the WPS to position the motor overhead while keeping the conveyor drive at floor level.

⚛ Space-Constrained Packaging Halls

In packaging production halls where floor space is premium, the WPS overhead motor configuration reduces the total drive footprint by positioning the motor above rather than beside the gearbox.

☵ Chemical Reactor Drives

Chemical plant stirrer drives often require the motor to mount above the vessel for safety and maintenance access reasons. The WPS directly supports this geometry with its S-type upward input shaft.

⚒ Beverage & Food Processing Equipment

Food and beverage equipment frequently uses overhead motor drives to keep the floor area clean and facilitate washdown. The WPS input-from-above design fits this standard equipment layout.

⚊ Mining Screen Drives

Vibrating screens and conveyor feeders in mining often have overhead motors to avoid the drive assembly from collecting ore debris. The WPS serves this application with the appropriate shaft entry geometry.

✎ ISO 9001:2000 Certified

We hold ISO 9001:2000 International Quality System Certification — the first in our industry category to achieve this standard. Every WPS is manufactured, assembled, and tested under this quality framework.

✎ CE Marking

Full CE marking confirms compliance with EU Machinery Directive 2006/42/EC requirements — covering safety, design standards, and manufacturing quality for mechanical power transmission equipment.

✎ Pre-Shipment Testing

Every unit undergoes: Noise test (below 68 dB(A) at rated load), Oil leak test (30-minute pressurisation), and Torque transmission test (output torque within ±5% of rated). Failed units are reworked — not shipped.

✎ FC20+ Material Certification

Housing castings are verified by material test certificates for FC20 grade (220 MPa minimum tensile strength). Hardness testing (160–200 HB) and ultrasonic testing for internal defects are performed on size 135 and above.

“Our packaging line redesign required overhead motors for hygienic floor access. The WPS was the only cast iron gearbox we found purpose-built for this configuration. After 12 months of washdown operation, the cast iron housings remain in perfect condition.”

“We replaced improvised adaptor-bracket solutions with WPS gearboxes on our cheese processing line. Purpose-built for overhead motor mounting means proper bearing load angles and oil distribution — far better longevity than our modified horizontal units.”

“The WPS input geometry is exactly what our sterile mixing vessel drive design required. Motor above, gearbox at the vessel head, agitator shaft below — a clean vertical drive train with no field modifications. Excellent precision and consistency across our 40-unit order.”

“WPS-80 units on our overhead conveyor drives. The compact overhead configuration freed up 300mm of floor width in our factory extension — significant when building space costs what it does. Reliable operation for 18 months of continuous two-shift production.”