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Flexco - Partners in Productivity

3-Roll Pneumatic Tracker

  • October 2026 Flexco 3-Roll Pneumatic Tracker Front View
  • October 2026 Flexco 3-Roll Pneumatic Tracker Side View
  • October 2026 Flexco 3-Roll Pneumatic Tracker Bearing Side View

Correct Belt Drift Before It Controls Your Budget 

Conveyor belt mistracking quietly drains your operation. When a belt drifts off centerline, it wears out early, damages conveyor structure, and causes unscheduled downtime that pulls your team away from higher-value work. In parcel handling and food processing, where lines run long shifts, those costs add up fast. 

The Flexco 3-Roll Pneumatic Tracker is a self-adjusting belt tracker for light-duty conveyors that corrects mistracking automatically. Strategically positioned paddles continuously monitor belt position. The moment the belt drifts, three auto-tilting rollers guide it back to center, with no manual adjustment and no need to stop the line. Washdown-rated stainless steel construction makes it a fit for hygiene-critical environments, and it’s available for belts from 24 to 60 inches (610 to 1524 mm) wide.

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Tracker Widths
Description Item Code
Roller Length Minimum Belt Width Maximum Belt Width
   
in.
mm
in.
mm
in.
mm
FLT-3P-ES-30IN-TRACKER
118725 32

813

24

610

30

762

FLT-3P-ES-36IN-TRACKER

118726

38

965

30

762 36 914
FLT-3P-ES-42IN-TRACKER

118727

44

1118

36

914 42 1067
FLT-3P-ES-48IN-TRACKER

118728

50

1270

42 1067 48 1219
FLT-3P-ES-54IN-TRACKER
118729 56

1422

48

1219 54 1372
FLT-3P-ES-60IN-TRACKER
118730 62

1575

54

1372 60 1524

 

 

FAQ 

What causes conveyor belt mistracking? 

Most mistracking starts with the conveyor, not the belt. A frame that isn’t square, rollers or pulleys that aren’t level, and material buildup on drums (which can act like an unintended crown) will all pull a belt off centerline. The belt itself can also be the cause, through camber, a splice or lacing that isn’t square, or uneven tension, because a belt tends to drift toward its slackest side. In parcel handling, uneven loading pushes it further. The root cause often sits upstream of where the drift shows up, so start looking there. 

How does a pneumatic belt tracker work? 

A pneumatic belt tracker uses plant air to steer a running belt back to center. On the Flexco 3-Roll Pneumatic Tracker, paddle sensors sit about 1/8 in. (3 mm) off each belt edge. When the belt drifts into a paddle, air is released from one side of a double-ended cylinder. That changes the angle of the three rollers, and the resulting tension difference guides the belt back to centerline without stopping the line. The system runs on 40 to 120 PSI, with a starting setting of about 75 PSI. 

No CAD Drawings are available for this Product Series