Light Duty Cam Adjusted Live Roller Conveyor, Roach Model 638CALR

Light Duty Cam Adjusted Belt Driven Live Roller Roach Model 638CALR can convey horizontally items where transfers, side loading or unloading, or temporary accumulation is required in light duty applications

TYPE: Belt Driven Live Roller Conveyors


Roach Model 638CALR is a cam adjusted, belt driven live roller conveyor for light duty applications. 

Belt driven live roller conveyors or BDLR are a simple, flexible and versatile method of conveying unit loads of various sizes and weights.  A BDLR essentially is a gravity roller conveyor powered by a belt.  The friction created by the belt drive produces a low pressure method of accumulating product, which in turn allows for loads to be stopped or stalled on the conveyor surface while the belt continues to run.

Unlike other types of unit handling conveyors, belt driven live roller conveyors are not well suited for incline or decline applications.


  • It can convey items horizontally where transfers, side loading or unloading, or temporary accumulation is required for light duty applications
  • Ideal for small items where tight roller spacing is required


  • Warehousing & Distribution 
  • Manufacturing 
  • Order Fulfillment
  • Aerospace
  • Government Military & Agency
  • Automotive
  • Parcel Handling


  • Tread Rollers: 1-3/8” dia. x 18 ga. galvanized steel, model 138G with 5/16” hex.
  • Pressure Rollers: 1-3/8” dia. x 18 ga. galvanized steel, model 138G with 5/16” hex.
  • Return Rollers: 1-3/8” dia. x 18 ga. galvanized steel, model 138G with 5/16” hex, adjustable.
  • Belting: 6” wide black PVC-120 COS.
  • Center Drive: Reversible drive w/ 24” integral belt take-up. Specify location.
  • Drive Pulley: 4” dia. with 1-3/16” dia. shaft or 8” dia. with 1-7/16” dia. shaft; both crowned and fully lagged.
  • End Pulley: 4” dia., crowned, with 1-3/16” dia. shaft. SPEED: 60 FPM, constant.
  • Bed: 6” x 1-1/2” x 12 ga. 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 frame. Specify desired elevation. Bed sections attached with couplings and floor supports.
  • Squaring Rods: Adjustable rods on underside of bed allow frame to be squared for improved belt tracking and are standard on all units over 30’.
  • Motor Drive: 1/3 HP, 230/460/3, 60 cycle, ODP right angle gear motor.
  • Bearings: All pulley bearings are precision, heavy duty, lubricated, ball bearing units with cast iron housings.
  • Roller Chain: Drive pulley is driven by No. 50 chain for 1-1/2 HP or less and No. 60 chain on larger drives. Chain take-up provided on motor base.
  • Electrical Controls: Optional.


  • Belting: 6” wide black PVC-150; 12” wide PVC-120.
  • End Drive: Mounted underneath conveyor. Minimum possible height is 20” TOR for underneath mounted end drive. Belt take-up required for end drive (if substituting end drive for center drive).
  • Side Mounted End Drive: Provides overall conveyor height of 9”.
  • Auxiliary Take Up: Provides 24” of belt take-up. Specify location. S
  • Floor Supports: Supports, knee braces, casters and polytier supports available. S
  • 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).
  • Motors: Available through 3 HP in TEFC, explosion proof, dirty duty, brake motor, 115/230/1, 575/3, etc.
  • Speed: Constant speed 3-120 FPM; DC variable speed; AC inverter variable speed. Other constant or variable speeds available. NOTE: Capacity changes with speed.
  • Guard Rails: 1-3/4” x 1” formed channel (model GC), adjusts horizontally to 8” wider than roller and vertically to 6” above roller; formed steel fixed (model FSG in 2”, 4” and 6” heights; fixed channel (model FC); 1-1/2” angle (model GA1-1/2).
  • Electrical controls: Magnetic starter (one direction or reversible); One direction manual starter; Momentary start/stop push button station; Forward/ reversing /stop push button station. Mounting and pre-wiring for units up to 12’ long

For more information on the Roach Model 638CALR 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

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