Rowing Boat Seat Wheel Roller with SR4ARS Bearing
1/4" Bore Roller for Rowing Seat Systems
This rowing boat seat wheel roller is designed for seat assemblies using a 1/4 inch axle or pin.
The roller has a 6.35 mm bore, a 34 mm outside diameter, and a 10 mm width. Inside the plastic wheel is an SR4ARS stainless steel bearing.
This makes the product a practical option for rowing boat manufacturers, replacement-part suppliers, and distributors working with inch-size components.
For buyers in the US and other markets using imperial dimensions, the 1/4" bore is an important detail when matching the roller to an existing rowing seat system.
Product Specifications
| Item | Details |
|---|---|
| Product Name | Rowing Boat Seat Wheel Roller |
| Bearing Model | SR4ARS |
| Bore Size | 1/4" (6.35 mm) |
| Outer Diameter | 34 mm |
| Width | 10 mm |
| Wheel Material | POM or Nylon |
| Bearing Material | Stainless Steel |
| Seal Type | 2RS Rubber Seal |
| Other Shield Option | ZZ Available |
| Shape | Round |
| Standard Colors | White / Black / Pink |
| Custom Colors | Available |
| Application | Rowing Boat Seat |
| OEM Service | Supported |
The 1/4" Bore Is the Main Selection Point
This roller is not simply a metric 6 mm version.
The bore is 1/4 inch, which equals 6.35 mm.
That difference of 0.35 mm can matter when the roller is installed on an existing axle or pin.
| Bore Specification | Size |
|---|---|
| Imperial Size | 1/4" |
| Metric Equivalent | 6.35 mm |
| Common Metric Size | 6 mm |
If the original rowing seat uses a 1/4" pin, the 6.35 mm bore is the correct dimension to check first.
For replacement orders, we recommend confirming the original axle size before choosing between a 6 mm and 6.35 mm bore.
How the Roller Fits into a Rowing Seat
The roller is installed between the rowing seat frame and its supporting rail.
During use, the seat moves back and forth while the wheel rotates around its internal bearing.
The complete assembly needs to work together:
Seat Frame → Axle / Pin → Internal Bearing → Plastic Wheel → Seat Rail
A problem with any one of these parts can affect the movement of the seat.
For this reason, buyers should check the complete installation dimensions rather than selecting a wheel based only on the outside diameter.
Why the Plastic Wheel Body Is Used
The outside part of the roller is made from POM or nylon.
A plastic wheel body can be useful for rowing seat applications because it helps keep the assembly light and can reduce direct metal-to-metal contact with the rail.
The material can be selected according to the application:
| Material | Typical Reason for Selection |
|---|---|
| POM | Smooth movement and good dimensional stability |
| Nylon | Good wear resistance and flexible material options |
The final choice depends on the seat design, rail material, load, and production requirements.
2RS and ZZ Options
The standard version uses 2RS rubber seals.
Other configurations can be discussed according to the application.
| Version | Main Feature |
|---|---|
| SR4ARS-2RS | Rubber seals on both sides |
| ZZ Version | Metal shields on both sides |
For outdoor and wet applications, the sealed version is usually a practical choice.
If you are replacing an existing roller, it is best to compare the seal or shield design with the original part.
One Detail Buyers Often Miss
When a buyer sees 1/4" and 6 mm listed as similar sizes, it can be tempting to treat them as interchangeable.
They are not exactly the same.
1/4" = 6.35 mm
6 mm = 6.00 mm
If the existing axle is designed for 1/4", using the wrong bore size may cause fitting problems or unwanted movement.
This is why we recommend checking the original shaft before placing a replacement order.
FAQ
What is the bore size of this rowing seat wheel?
The bore is 1/4 inch, or 6.35 mm.
Is this the same as a 6 mm bore wheel?
No. A 1/4" bore is 6.35 mm, while a 6 mm bore is smaller. The correct version should match the actual axle or pin.
What is the complete size of the roller?
The standard size is 6.35 × 34 × 10 mm.
What bearing is used inside the roller?
The product uses an SR4ARS stainless steel bearing.
What is the outer wheel made of?
The outer wheel can be made from POM or nylon.
Is the bearing sealed?
The standard version uses 2RS rubber seals. A ZZ shielded version can also be discussed depending on the application.
Can this roller be used in salt-water rowing equipment?
The stainless steel internal bearing makes it suitable for outdoor and wet environments where corrosion resistance is important. The actual service life will still depend on water exposure, load, and maintenance.
Can I use this wheel for a new rowing seat design?
Yes. Samples can be supplied for checking the fit, movement, and installation before mass production.
Can you make the wheel in a different color?
Yes. White, black, pink, yellow, red, and other colors can be discussed depending on the order quantity.
Can the dimensions be customized?
OEM customization can be discussed. A drawing, sample, or complete size requirements can be provided for evaluation.
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