Reduced Belt Drag
Supporting rollers reduce friction beneath the carrying belt compared with a stationary slider bed.
Belt Over Roller Conveyors
Belt Over Roller Conveyors.
Four models of roller bed belt conveyors. Roller bed reduces friction for heavier loads than slider bed designs.
4 Models
Select Your Belt Over Roller Model.
Roller bed beneath the belt reduces friction and handles heavier loads. Available in standard, wire mesh, and inclined configurations.
Model 190RB
Roller Bed Belt Conveyor
1.9″ galvanized rollers on 6″ centers. 12″–48″ belt widths. Horizontal or slight incline.
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Model 190RBW
Roller Bed Wire Mesh Belt Conveyor
Open wire-mesh belt for airflow and wet-product drainage. Moisture exposure requires application review. 12″–36″ widths.
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Model 190RBW-S
Roller Bed Belt Conveyor (Medium Duty)
1.9″ roller medium duty variant. 12″–36″ belt widths, standard and overhead drives.
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Model 190RBI
Inclined Roller Bed Belt Conveyor
Belt over roller bed for inclines. 12″–30″ rough-top belt, 0°–30° incline.
View Specs →The Fundamentals
What Is a Belt-Over-Roller Conveyor?
A belt-over-roller conveyor, also called a roller bed belt conveyor, carries a continuous belt over a series of supporting rollers. The conveyed product still rides on a belt surface, but the rollers beneath that belt reduce sliding friction compared with a stationary slider bed.
Reduced belt drag can make roller bed construction a strong starting point for heavier unit loads, longer powered runs, and applications whose length, speed, or duty cycle would create excessive friction on a slider bed.
ACSI models include standard roller bed belt conveyors, wire-mesh configurations, medium-duty arrangements, and an incline model. Final selection must account for product weight, total live load, conveyor length, belt type, speed, elevation change, and operating environment.
Heavier or Longer Runs
Roller bed construction can be evaluated when load and conveyor length increase belt-pull requirements.
Wire-Mesh Options
Open wire-mesh belting can support airflow and wet-product drainage. The complete standard conveyor is not represented as washdown rated.
Incline Configurations
The 190RBI provides a rough-top roller bed belt arrangement for applicable elevation changes.
Selection Comparison
Roller Bed vs. Slider Bed.
Both types give the product a continuous belt surface. The important difference is how the belt is supported underneath.
Quick rule of thumbConsider roller bed construction as load, conveyor length, or belt-pull requirements increase. Choose only after the complete application is reviewed.
Swipe the table to compare
| Selection Factor | Belt Over Roller | Slider Bed |
|---|---|---|
| Under-belt support | Series of carrying rollers | Smooth stationary bed |
| General fit | Heavier loads or longer runs where reduced belt drag matters | Light- to medium-duty transport and compact, straightforward layouts |
| Carrying surface | Continuous belt surface | Continuous belt surface |
| Available ACSI examples | 190RB, 190RBW, 190RBW-S, 190RBI | LPB, HPB, TSB, SBT, MPB, FTC |
Actual capacity depends on conveyor length, width, speed, product characteristics, drive selection, incline, and operating conditions. Explore ACSI slider bed belt conveyors →
Buyer Questions
Belt-Over-Roller Conveyor FAQs.
Answers to common questions about roller bed construction, slider bed selection, inclines, and wire-mesh belts.
What is a belt-over-roller conveyor?
A belt-over-roller conveyor carries a continuous belt over supporting rollers. The rollers reduce belt friction compared with a stationary slider bed.
When should I use belt over roller instead of slider bed?
Belt over roller is commonly considered for heavier loads, longer conveyor runs, or applications where reduced belt drag is important. Final selection depends on the product, load, length, speed, and operating conditions.
Can belt-over-roller conveyors operate on an incline?
Yes. The ACSI 190RBI is an inclined roller bed belt conveyor with rough-top belting for applicable elevation-change requirements.
Why use a wire-mesh belt over a roller bed?
A wire-mesh belt can be evaluated when drainage or airflow makes an open belt surface useful. Moisture exposure requires review of the complete conveyor; the standard model is not represented as washdown rated.
Belt-Over-Roller Application Review
Start with the Load and Conveyor Length.
Share the product dimensions and weight, total live load, conveyor length and width, belt type, speed, elevation change, and operating environment. ACSI manufactures the conveyor equipment, and our distributors provide system integration and installation.