SK400 Series Mixers   Features Series 400 mixers deliver a superior combination of value and performance in a wide range of applications. Designed for small-capacity, tough-duty mixing applications, the SK4000 series gearmotor is a hollow shaft unit for top or side entry applications. It incorporates many of the same construction and performance features found on our medium-and large-capacity mixer drives. Rugged Cast-Iron Housing to accept mixing stresses while maintaining accurate gear alignment and resisting corrosion. All-helical gearing is designed for high efficiency and maximum load-carrying capacity with reserve strength rating. No-Leak Drywell Construction, Oil sump is isolated from output shaft to prevent gear lubricants from leaking and contaminating the product being mixed. Available from 1 to 25 HP with speeds from 10 to 187 RPM Choose from a wide variety of motor options, including explosion-proof and multiple-speed units Compact design with fewer parts for easy installation and maintenance Check, add or change oil without removing the safety guard Largest bearings in the size range provide unmatched L10 life exceeding 100,000 hours Unique output shaft connection reduces shaft deflection to extend seal life Longer shaft lengths accommodate a wider range of tank configurations Leak proof reducer design Options Open- and closed-tank models available Choice of dry-running single mechanical seals or lubricated double mechanical seals Optional seal pedestal design permits operation up to vessel temperatures of 400°F (approx. 200°C) Optional angle riser brackets eliminate the need for baffle   Seal Features