## Vision Fitness R-40-F Upright Bike RPM Speed Sensor (SS321)
The Vision Fitness R-40-F Upright Bike RPM Speed Sensor is a replacement-style sensor component for the Vision Fitness R-40-F upright exercise bike. It detects the bike’s rotation speed, or revolutions per minute (RPM), and supports the equipment’s ability to monitor pedaling activity. If your R-40-F displays incorrect RPM information or no longer detects pedal movement, this sensor may be the part you need to investigate or replace.
Product Details and Benefits
This product is identified as **SS321** and is supplied for use with the **Vision Fitness R-40-F upright bike**. The sensor serves a specific function within the bike’s monitoring system: it helps detect movement from the rotating drive or pedal assembly so the equipment can calculate RPM.
Accurate speed sensing helps the bike provide useful workout feedback during exercise. When the correct sensor is installed and the rest of the monitoring system functions properly, the equipment can recognize pedal rotation and report cycling activity through its display or control system.
The SS321 can help support maintenance when an original RPM speed sensor becomes damaged, fails, or stops sending a reliable signal. Replacing the matching component may help restore the bike’s ability to detect rotation, although other wiring, display, or control-system issues can also affect RPM readings.
This product has the following identifying information:
- **Brand:** Vision Fitness
- **Product:** R-40-F Upright Bike RPM Speed Sensor
- **Part number/SKU:** SS321
- **Barcode:** SS321
- **Equipment type:** Upright exercise bike
- **Compatible model:** Vision Fitness R-40-F
- **Listed category:** Treadmill Sensors
- **Associated serial number:** RB1511308BA00035
Compatibility and Applications
The Vision Fitness R-40-F Upright Bike RPM Speed Sensor is designed for the **Vision Fitness R-40-F upright bike**. Its intended application is RPM and speed detection within that exercise machine. It is not identified here as a universal sensor, so buyers should not assume compatibility with other Vision Fitness models, other upright bikes, or treadmills unless the equipment documentation confirms it.
This part may suit a repair or maintenance project involving an R-40-F bike that has lost reliable pedal-speed detection. It may also be useful when matching a replacement component by its SS321 identification number.
Why Choose This Product
Choosing a sensor with the correct Vision Fitness model and SS321 identification can make part selection easier and reduce the risk of ordering an unrelated component. The sensor has a defined purpose and model application, which helps buyers compare it with the part already installed in their exercise bike.
Before You Buy
Confirm that your equipment is a **Vision Fitness R-40-F upright bike** before ordering. Compare the existing sensor and any available service information with part number **SS321**. Also check the equipment serial information where applicable, including **RB1511308BA00035**. The available product information does not specify dimensions, material, connector details, installation instructions, package quantity, warranty, or included hardware. Verify those details if they are important for your repair.
