Poly-V Photo Eye Controlled Powered Roller Accumulator Conveyor, Roach Model 796 PRA

Power Roller Accumulator Conveyor Roach Model 796 PRA assists in the control of the rate of flow of products through a production process. Rather than a continuous flow of products like other powered roller conveyors, the accumulation conveyor starts and stops the movement of loads automatically, allowing for storage and metering or batch advancing of loads

TYPE: Accumulation Conveyors


The Model 796 PRA is a photo eye controlled powered roller accumulator conveyor. Its motorized rollers drive the conveyor, eliminating drive belts, chains and line shafts.


  • Lengthwise grooves provide drive by adhesion, and optimizes the contact area, giving increased power transfer
  • Motorized rollers drive the conveyor, eliminating the need for drive belts, chains or lines shafts
  • Divided into accumulation zones; each zone is powered by a motorized roller
  • Roller may be turned off to cause product in the zone to stop
  • Controller's sense product presence and control the accumulation and release of product zone by zone
  • Box and product damages are virtually eliminated with accumulation functionality
  • Available in two configurations:  2 Rib Poly-V Belt or 3 Rib Poly-V Belt
    • 2 Rib Poly-V Belt: 110 lbs. per zone at 60 fpm (maximum capacity)
    • 3 Rib Poly-V Belt: 350 lbs. per zone at 53 fpm (maximum capacity)


  • Manual workstations
  • Robotic palletizers
  • Sorters
  • Merges
  • Warehousing
  • Distribution
  • Package Conveyance 


  • Tread Rollers: 796PRA 1.9" dia x 16 ga. galvanized, model 196G grooved.
    796 PRAC 2-1/2" dia to 1-11/16" dia. x 14 ga. steel tapered rollers, Model 254T
  • Drive Belt: 3/16” dia., polyurethane belts. Nominal 15 lbs. per roller drive.
  • Capacity: 15 lbs. per roller or up to 70 lbs. per zone SPEED: 60 FPM, constant.
  • Roller Centers: 3”
  • Bed: 796 PRA - 7” x 1-3/4” x 12 ga. formed steel channel frame. Rollers set low in frame.
  • Accumulation: Zone singulation operation; 24" zone length; zones are actuated using a photo eye
  • Motor Drive: 796PRA, Driven by 24V DC Powered Roller
      796PRAC, Indirect driven by 24 VDC Powered Roller.  (See drawing in PDF)
  • Bearings: Precision ABEC bearings
  • DC power supply: 24 volt fixed output required


  • Plastic Bed Belting Available
  • Accumulation Zones: 18” and 30” long zones available, depending on roller centers.
  • Floor Supports: Supports, knee braces, casters and polytier supports avail-able. See Conveyor Accessories.
  • Conveyor Speed: Constant speed 34-260 FPM
  • Ceiling Hangers: 5/8” dia. threaded rod with hardware to attach rods to conveyor. Provides 6’ clearance between ceiling and TOR (furnished in place of floor supports). See Conveyor Accessories.
  • Diffuse Photo Eye: Photo eyes mounted below the tread rollers
  • Bed: Control side 7” x 1-3/4” x 12 ga. formed steel channel frame. Rollers set low in frame. Outside channel 5” x 1-3/4” x 10 ga. formed steel channel frame. Rollers set high in frame.

For more information on the Powered Roller Accumulator Conveyor, Model 796 PRA  please contact a Thomas Conveyor & Equipment Automation Engineer at 844 220 0086 or click on the Contact Us button above.

QUESTIONS? CALL 844-220-0086