Roach SZ251ZPA Zero Pressure Accum Smart Zone Heavy-Duty Conveyor

Roach SZ251ZPA Zero Pressure Accumulator Smart Zone Heavy-Duty Conveyor

At a Glance

  • Heavy-duty zero pressure accumulator
  • Accumulates heavy products, containers and pallets in 5 foot zones
  • Loads up to 3000 lbs may be safely accumulated
  • Photo electric sensors replace sensor rollers

Safely Accumulate Heavy Products, Containers and Pallets

The Roach SZ251ZPA Smart Zone conveyor is a heavy-duty zero pressure accumulator, designed to accumulate heavy products, containers and pallets in 5' zones. The Roach design incorporates photo electric sensors-instead of sensor rollers, eliminating many common problems associated with conveying wooden pallets. Products do not touch during accumulation and are singulated individually off of conveyor. Heavy loads weighing up to 3000 lbs. may be safely accumulated with Roach Smart Zone.


Tread Rollers: 2-1/2" dia. x 11 ga. steel, model 251S.
Pressure Rollers: 1.9" dia. x 16 ga. steel, model 196S; 27" BF for all widths.
Return Rollers: 1.9" dia. x 16 ga. steel, model 196S, adjustable.
Belting: 24" wide PVC-120 COS.
Side Mount End Drive: Allows one direction unit operation.
Drive Pulley: 12" dia., with 1-15/16" dia. shaft, crowned and fully lagged.
Tail Pulley: 8" dia., crowned, with 1-3/16" dia. shaft.
Take-Up: Screw type unit at tail pulley provides 12” belt take-up.
Bearings: Precision ABEC bearings.
Bed: 5" x 1-1/2" x 3/16" formed steel channel frame slotted for tread rollers to pop-out. When unit is installed at 7'-0" elevation or higher, rollers must be retained in conveyor. Specify desired elevation. Bed sections are bolted together with butt couplings and floor supports.
Speed: 35 FPM, constant.
Accumulation: 5'-0" long zones with zone singulation operation. 1'-6" of live roller over end plates at each end of conveyor remains live during operation (# of zones x zone length + 3'-0" = overall conveyor length). Zones are pneumatically actuated by using photo electric sensors.
FRL: Unit is provided with filter, regulator and lubricator with 3/8" ports for 60 PSI operational pressure.
Motor Drive: 1 HP, 230/460/3, 60 cycle, ODP right angle gear motor.
Roller Chain: No. 60 chain provided at drive pulley. Chain take-up provided on motor base.


Belting: 12" wide PVC-120; 24" wide PVC-150.
Drive Pulley: 8" dia. with 1-7/16" dia. shaft, crowned and fully lagged.
Slug Release: Products may be slug released rather than individual product release in normal zone singulation; accumulation mode will not be disturbed when slug release option utilized.
Floor Supports: Supports, knee braces, casters and polytier supports available.
Speed: Constant speed 8-120 FPM; DC variable speed; AC inverter variable speed. Other constant or variable speeds available. Note: Capacity changes with speed.
Motors: Available through 3 HP in TEFC, explosion proof, dirty duty, brake motor, 115/230/1, 575/3, etc.
Electrical Controls: Magnetic starter; One direction manual starter; Momentary start/stop push button station; start/stop push button station.
Defused Smart Zone: Photoeyes mounted below tread rollers.

Please contact Pro Pac or call 888-318-0083 for your conveyors.

Roach SZ251ZPA Conveyor Lengths & Unit Weights

Conveyor Length13'18'23'28'33'38'43'48'53'58'63'68'73'78'83'Deduct
Unit Weights (lbs) with 4" Roller Centers
Per Foot
Conveyor Length13'18'23'28'33'38'43'48'53'58'63'68'73'78'83'Deduct
Unit Weights (lbs) with 6" Roller Centers
Per Foot

Please contact Pro Pac or call 888-318-0083 for your conveyors.

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