Product engineers cite a compact, economical alternative to traditional screw conveyor drives: Closely stepped speed reduction ratios combined with a directly coupled gearmotor or NEMA C-face input design eliminates the need for top motor mounts, pulleys, belts or guards. Minimizing parts and eliminating the belted input systems ease maintenance, while drive performance. Screw conveyor drive options feature a Unicase reducer housing, Quadrilip reducer shaft sealing and high capacity output bearings with CEMA standard flange mounting and CEMA drive shafts ranging from 1.5 in. to 3-7/16 in.
The drive package suits both Clincher Parallel Shaft and Helical-Bevel Right Angle gear units. The CEMA flange assembly offers protection against unwanted debris with dual Viton gap (0.03 in.) seals on either side of the grease-filled felt packing seal. Drive shaft material evacuation ports in the flange help protect the drive system from debris. A slight lead taper on the reducer shaft provides for easy mounting and removal, allowing for some screw pipe misalignment and reduced bearing loads.
Clincher SCP Unit specs: torque capacity up to 53,100 lb.-in.; power range of 0.16–60 hp; 4.32:1–1,585.08:1 ratio range; 1.0–405 rpm output speed; and, up to 97 percent efficiency. Helical-Bevel SCP Unit specs: torque capacity up to 42,480 lb.-in.; power range of 0.16–0.30 hp; 8.09:1–4,246.38:1 ratio range; 0.41–216 rpm output speed; and, up to 95 percent efficiency. — Nord Gear Corp. USA, Waunakee, Wis., 608/849-7300, 888/314-6673; www.nord.com