WEG W22 400L 250kW 6-Pole IE3 Motor

The WEG W22 400L 250kW 6-Pole IE3 motor provides 985 RPM shaft power with 2423 Nm of continuous torque, making it one of the highest-torque standard LV motors available in the Saudi Arabian and GCC market. This exceptional torque output at moderate speed enables direct coupling to very large centrifugal pumps, eliminates gearbox requirements in many applications, and reduces the system mechanical complexity that drives long-term maintenance costs at major industrial facilities.

The combination of 400L frame size and 6-pole winding creates a motor optimized for the specific requirements of large crude oil transfer pumps at Saudi Aramco's pipeline infrastructure. Cross-country crude oil pipelines including the East-West Pipeline (Petroline) operated by Saudi Aramco require very large-capacity booster pump stations where motor reliability, efficiency, and low maintenance requirements are primary design criteria. The W22 400L 250kW 6P addresses all these requirements with a proven design backed by WEG's global track record of over 100 million motors sold.

In Saudi Aramco's industrial vocabulary, motors of this class are classified as 'critical rotating equipment' subject to enhanced inspection, redundancy, and maintenance requirements under SAEP-302 (Inspection of Rotating Equipment) and SAP-Q procedures. Razz Middle East supports Aramco customers with full technical documentation packages including motor data sheets, dimensional drawings (GADs), connection diagrams, spare parts lists, and lubrication specifications formatted to Aramco's document control requirements.

The W22 400L 6P motor's bearing arrangement addresses the high radial loads imposed by large, directly-coupled impeller shafts. The drive-end bearing uses a cylindrical roller bearing (NU-type) capable of handling radial loads exceeding 50kN, while the non-drive end uses a deep groove ball bearing that locates the rotor axially and carries moderate radial loads. This bearing arrangement is specifically designed for pump applications where shaft loading from hydraulic forces on the impeller is transmitted directly to the motor bearings.

Thermal performance at ambient temperatures up to 55°C is achieved through the W22 400L's oversized cooling fin area and high-efficiency internal fan. The motor's temperature rise at full load remains within Class B limits (80°C) despite Class F insulation rating, providing a 75°C thermal reserve that effectively doubles the winding insulation service life compared to motors operating at their design temperature limits. This extended insulation life is a key contributor to the W22 series' reputation for 20+ year operational lifetimes in continuous industrial service.

Razz Middle East maintains the W22 400L 250kW 6P in our Saudi Arabia buffer stock program, targeting 7–10 working days delivery for standard configurations. Custom configurations including special voltages, paint systems, encoder mounts, and auxiliary device packages are coordinated directly with WEG's production scheduling team, with typical lead times of 12–16 weeks for made-to-order specifications.