N28 Series Cylindrical Roller Wheels for Chain Conveyors
These roller wheels carry the chain on a conveyor and have to survive impact and contamination at the same time. Strong impact resistance and sealing performance are what make the N28 series suitable for chain conveyors in heavy plants.
- Bore d 19.2-41.75 mm
- Outside diameter D 85-175 mm
- Dynamic load rating Cr 133-306 kN
- Static load rating Cor 174-426 kN
Key Benefits
Why rolling beats sliding here.
Lower Friction And Heat
Rolling elements roll on the support surface instead of sliding, which creates less friction, heat generation, energy consumption and wear.
High Load Capacity
Dynamic ratings from 133 kN to 306 kN cover the load range of heavy chain conveyors.
Sealing Against Contamination
Excellent sealing performance keeps contamination out, which is the usual failure path in conveyor environments.
Where It Is Used
Applications.
- Chain conveyors in heavy industry
- Metallurgical plant conveying systems
- High impact transfer conveyors
- Conveyor overhauls and roller replacement
Who It Is For
- Conveyor maintenance teams
- Chain manufacturers
- Plants with high roller replacement rates
- Buyers sourcing N28 series equivalents
Problems It Solves
- Friction and heat from sliding contact
- Roller failure under impact loading
- Contamination entering the roller
- High energy consumption on long conveyors
Technical Features
Specification range.
Defined Size Range
Bore from 19.2 mm to 41.75 mm with outside diameter from 85 mm to 175 mm covers common chain conveyor designs.
High Load Ratings
Dynamic rating Cr 133-306 kN and static rating Cor 174-426 kN across the range.
Impact And Seal Performance
Strong impact resistance with excellent sealing is what defines the series for conveyor duty.
Specifications
Select by bore, outside diameter and load rating for your chain.
| Series | N28 cylindrical roller wheel |
|---|---|
| Bore d | 19.2-41.75 mm |
| Outside Diameter D | 85-175 mm |
| Dynamic Load Rating Cr | 133-306 kN |
| Static Load Rating Cor | 174-426 kN |
| Key Properties | Impact resistance, sealing performance, low friction |
| Application | Chain conveyors |
Materials
- Bearing steel rings and rollers
- Hardened running surface
- Seal package for conveyor environments
Manufacturing Process
Size Selection
Bore, outside diameter and load rating are matched to the chain design.
Ring Manufacturing
Rings are turned, hardened and ground.
Roller Production
Rollers are ground and sorted for load sharing.
Assembly And Sealing
The wheel is assembled, greased and sealed.
Quality Control
- Dimensional inspection of bore and outside diameter
- Hardness verification
- Load rating confirmation against the series data
- Seal integrity check
Customization Options
- Sizes across the d and D range
- Seal specification for hot or dusty plants
- Batch quantities for full chain replacement
- Marking for traceability
Use Guide
- Match the wheel rating to the actual chain load
- Replace wheels in sections rather than singly
- Check chain pin and bush wear at the same time
- Re grease or replace seals at planned intervals
How It Compares
Against sliding and lighter rollers.
| Plain bushings | Rolling contact produces less friction, heat, energy consumption and wear than sliding. |
|---|---|
| Unsealed rollers | Excellent sealing keeps contamination out, which is the main life limiting factor in conveyor duty. |
| Lower rated wheels | Cr up to 306 kN covers heavy conveyor loads that lighter wheels cannot sustain. |
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What sizes are available?
Bore d from 19.2 mm to 41.75 mm and outside diameter D from 85 mm to 175 mm.
What load can they carry?
Dynamic load rating Cr is 133-306 kN and static rating Cor is 174-426 kN across the range.
Why use roller wheels instead of bushings?
Rolling elements roll rather than slide, producing less friction, heat, energy consumption and wear.
How do they handle contamination?
The series is specified with excellent sealing performance, which is why it is used in chain conveyors in dirty environments.
Can you match our current wheel?
Yes. Send the bore, outside diameter and a sample or designation and we quote the equivalent.
What do you need to quote?
Bore and outside diameter, chain load, operating environment and quantity.
Re Roller Your Conveyor Chain
Send your wheel dimensions and chain load and we come back with a size and quotation.