Midwest Cross-Reference Table
Check your handpiece model below to find the correct bearing kit. All dimensions in mm (ID x OD x W).
| Midwest Model (Series) | Handpiece Type | Bearing Size (mm) | Ball Material | Our Part # |
|---|---|---|---|---|
| Tradition / Tradition Plus | High Speed | 3.175 x 6.35 x 2.78 | Ceramic / Steel | SR144TLK |
| Stylus / Stylus Plus | High Speed | 3.175 x 6.35 x 2.78 | Ceramic | SR144TLK-C |
| XGT / Phoenix | High Speed | 3.175 x 6.35 x 2.78 | Ceramic (Balanced) | SR144TLK |
| Quiet-Air (Legacy) | High Speed | 3.175 x 6.35 x 2.78 | Steel | SR144TLK-S |
| Shorty / Rhino | Low Speed Air Motor | 4.00 x 7.00 x 2.00 | Steel | MR74ZZ |
← Scroll right to view more params
Precision Bearings for the MidwestTradition Standard
Focus on Tradition Series Stability:
“The Midwest Tradition is one of the most reliable handpieces ever made. To maintain its performance, our replacement bearings utilize Phenolic retainers and precision-matched balls. This ensures the turbine can handle the high lateral pressure during heavy cutting procedures without developing the ‘chatter’ common in lower-quality aftermarket parts.”
Focus ontylus & Modern Turbines:
“For the newer Stylus and Stylus Plus series, we provide **Ceramic Ballearings** that are dynamically balanced to support higher RPMs and improved air-flow dynamics. Our ABEC-7 tolerances ensure that the spindle runs true, protecting the Midwest autochuck system from premature wear and extending the time between repairs.”
Not sure which bearing fits your Midwest Dental Bearing handpiece?
Don’t guess. Send us a photo of your turbine or the old bearing. Our technicians will identify the correct ISO part number for you within 1 hour.
FAQ for Midwest Dental Bearing
Willhese bearings fit both the fixed-back and swivel-back Midwest Tradition?
Yes. Whether you have the Tradition with a fixed 4-hole back or the Tradition Plus with a swivel connection, the internal turbine uses the same bearing specifications. Our SR44TLK series is the standard replacement for these classic Midwest rotors.
Do I need to replace the O-rings whenhanging Midwest bearings?
We strongly recommend it. Midwest handpieces rely on precise O-ring seating for air-seal and vibration dampening. When you purchase our Midwest compatible bearings, please check if you also need our High-Temp O-ring kits to ensure a complete and leak-free rebuild.
Can I upgrade my old Midwest Quiet-Air to ceramic bearings?
Absolutely. Upgrading legacy models like the Quiet-Air or original Tradition from steel to Ceramic Bearings is a great way to reduce heat and noise. Ceramic balls are lighter and smoother, which can give these older, heavy-duty handpieces a modern, faster feel.
Are these bearings compatible with the Midwest Shorty or Rhino low-speed motors?
We stock specific steel bearings for the **orty** and Rhino air motors. These are heavy-duty, low-speed bearings designed to handle high torque. Please refer to our low-speed section or contact us for the specific part numbers for Midwest motor overhauls.