NRG corrosion resistant Non-Metallic H78 series sprockets are split as standard for ease of installation and removal. While typically used for drive and driven sprockets, in smaller tanks H78 series gears are ideal collector sprockets when used with H78 chain and attachments. Available solid or in c-hub, b-hub, or a-plate configurations, H78 sprockets come in a wide range of tooth sizes (see below). NRG's H78 sprockets are offered in UHMW-PE or Nylon-6 materials, with 304 or 316 ss hardware. UHMW-PE segmental sprocket teeth mounted on cast iron bodies or all cast iron sprockets are also available. Body No. No. of Teeth P.D. (in) Segs Max Bore LTB (in) Offset * Hub Bolts Est. Wt. W-2990 30 24.96 6 3-15/16 3-3/4 4 2 135 W-2996 40 33.25 8 4-15/16 6 6-1/4 4 250 W-2998 40 33.25 8 3-7/16 4-3/8 2-3/8 2 175 W-3603 40 33.25 8 3-15/16 5 2-7/8 4 225 W-3544 40 33.25 8 3-7/16 6 1-1/2 4 190 W-3652 40 33.25 8 3-15/16 6-3/4 4-1/2 4 240 W-2997 43 35.74 8 4-15/16 6 6-1/4 4 265 W-2991 48 39.89 8 5-15/16 6 6-1/4 4 290 W-2987 48 39.89 8 5-15/16 8-1/4 8-1/4 4 360 * Offset may be reduced to a lesser dimension but not increased. Available in NSF Certified Material