Specifications:
The document outlines the specifications for the SZA251CDA SMART ZONE® heavy-duty chain-driven zero pressure accumulator. Key components include 2-1/2” diameter tread rollers, roller-to-roller No. 40 chain drive, and zone-to-zone No. 60 chain drive. The center drive can be mounted on either side or underside, with precision ball bearing units supporting the drive shafts. Roller centers are available in 4” or 6” options.

Bed and Frame:
The bed consists of 7” x 1-1/2” x 7 ga. and 5” x 1-1/2” x 7 ga. formed steel channel frames, bolted together with butt couplings and floor supports. Accumulation zones are 5’-0” in length, controlled by photoelectric sensors with an air clutch, operating at a maximum of 60 psi.

Performance:
The conveyor operates at a constant speed of 35 FPM. It features a chain guard enclosing the chains along the entire conveyor length. Bearings are heavy-duty, zinc-plated, grease-packed, and have a labyrinth seal. The unit includes a filter, regulator, and lubricator for 60 PSI operational pressure.

Motor and Capacity:
The motor drive is a 3/4 HP, 230/460/3, 60 cycle, ODP right angle gear motor. The conveyor has a capacity of 1000 lbs./ft., supporting up to a maximum of 3000 lb. pallets. Electrical controls are optional.

SMART ZONE® Features:
The SMART ZONE® system uses retroflective photo eyes with a 110V AC or 24V DC power supply. Zone lengths range from 3’ to 10’ in 4” or 6” increments, with frame lengths varying accordingly. The bed is constructed from structural frames weighing 9.8 lbs./ft. and 6.7 lbs./ft.

Optional Equipment:
Optional equipment includes supports, knee braces, casters, and polytier supports. Speed options range from constant 20-120 FPM to variable speeds via DC or AC inverter. Motors are available up to 3 HP in various configurations, including TEFC and explosion-proof.

Specification Table:
The document provides a detailed specification table listing unit weights for different conveyor lengths and roller centers. For 4” roller centers, weights range from 869 lbs. for a 10’ conveyor to 13,878 lbs. for a 100’ conveyor. For 6” roller centers, weights range from 811 lbs. for a 10’ conveyor to 11,926 lbs. for a 100’ conveyor.