Lares 557, 757 and 330E: Identify the Exact Version
Lares documentation separates handpiece families and turbine assemblies. Use the markings on the complete handpiece and removed bearing before matching a replacement. See the Lares user and maintenance guides and the 557/757 Ultralite and Euro manual. A handpiece model or complete turbine number alone does not establish a loose-bearing cross-reference.
| Handpiece marking | Documented family | Confirm before a bearing quote |
|---|---|---|
| 557 / 757 | Ultralite or Euro high-speed versions | Exact model, turbine generation, chuck type and removed bearing code or measured size |
| ProStyle SF | Fixed-back / non-swivel high-speed handpiece | Full model and turbine reference; do not assume an Ultralite or Euro bearing fits |
| 330E | High-speed handpiece with a separate Lares instruction guide | Exact handpiece version, turbine assembly and bearing marking |
| Pastel Plus | Low-speed / prophy family | Use a separate low-speed identification request; do not apply a high-speed bearing map |
Important: Lares lists complete replacement turbine assemblies in its parts catalog. Those assembly numbers are not loose-bearing part numbers. Send the removed bearing marking or measurements for an item-specific review.
Turbine Version, Bearing Position and Failure Checks
- Match the full turbine version. Lares uses different handpiece and turbine families. The name 557, 757 or ProStyle SF does not by itself verify a loose bearing’s size, cage, shield or fit.
- Check the removed part. Record the bearing marking, inner diameter, outer diameter, width, front or rear position, and any visible damage. Include photos of the handpiece and rotor or cartridge.
- Diagnose the assembly. Noise or vibration can also involve the chuck, rotor, air supply or other components. A bearing replacement alone may not resolve the fault.
- Quote the exact scope. Tell us whether you need loose bearings or a complete turbine, the required quantity and destination. We will confirm a proposed item before quoting.
Lares’ replacement parts catalog lists complete 557/757 Ceramic CX turbine assemblies. Its assembly part numbers should not be treated as loose-bearing part numbers.
Related Lares Handpiece Guide
Request Lares Bearing Identification and Quote
Send the exact handpiece model, turbine or cartridge reference, chuck and connection version, removed bearing marking or measured dimensions, front/rear position, photos, quantity and destination. We will review the proposed part and quote the requested scope.
Lares Handpiece Bearing FAQ
Do Lares 557 and 757 handpieces use the same loose bearing?
Do not assume so. Lares identifies 557 and 757 handpieces and multiple turbine versions, but a handpiece name does not prove the loose bearing dimensions or construction. Send the exact turbine reference and removed bearing marking or measurements for a fit review.
Does Lares ProStyle SF use the same bearing as Ultralite or Euro?
Compatibility is not established by the series name. Lares describes ProStyle SF as a fixed-back, non-swivel handpiece. Match its exact handpiece and turbine version, then compare the removed bearing specifications with the proposed replacement.
Will new bearings resolve high-pitched noise in a Lares handpiece?
Not necessarily. Noise may involve bearings, rotor balance, the chuck, air supply or another part of the turbine. Inspect the complete assembly and removed bearings before deciding on a repair. We cannot promise that a bearing change alone will resolve the noise.
Do you supply loose Lares bearings or a complete turbine?
This page supports identification and quotation requests for replacement bearings. If you need a complete turbine, state that in your inquiry and include the manufacturer assembly reference. We will confirm the requested scope and availability before quoting; a complete turbine number is not a loose-bearing cross-reference.