Technical Support

These products belongs to deep customization product, and their sizes, shapes and opening position are quite different according to different usage scenarios. The pictures displayed on the page are for reference only. It is suggested that you contact our customer service team for professional selection guidance and accurate quotation. We will serve you wholeheartedly.

Industry Solutions

Built for the Toughest
Industrial Environments

🚗

New Energy Vehicles (EV)

800V drive motors and OBC units generate intense shaft currents and electromagnetic interference. Our integrated solution eliminates bearing damage and meets stringent EMC requirements.

Shaft Grounding RingNanocrystalline Core

Wind Power Generation

Offshore and onshore turbines face relentless vibration, salt spray, and temperature cycling. Bearing isolators eliminate lubricant leakage while shaft grounding rings protect against gear-induced shaft voltage damage.

Bearing IsolatorShaft Grounding Ring
🏭

Petrochemical & Refining

API-compliant bearing isolators for pumps, compressors, and mixers operating in hazardous, corrosive, or high-temperature environments. Explosion-proof rated options available.

Bearing IsolatorShaft Grounding Ring

VFD Industrial Motors

Variable frequency drives induce common-mode currents that destroy motor bearings within months. Our complete solution tackles both electrical and electromagnetic causes.

Shaft Grounding RingNanocrystalline CoreBearing Isolator

Marine & Offshore

Ship propulsion motors, pumps, and generators require zero-maintenance sealing solutions that withstand salt, vibration, and pressure differential. Stainless-steel bearing isolators built for marine-grade durability.

Bearing IsolatorShaft Grounding Ring
🖥️

Data Centers & AI Servers

High-density GPU and HPC power supplies demand ultra-low EMI. Nanocrystalline common-mode chokes provide superior suppression at high switching frequencies.

Nanocrystalline CoreAmorphous Core
Selection Guide

Information Required for Product Selection

Please provide the following information when requesting a quote or technical recommendation.

🛡️ Bearing Isolator Selection

  • • Shaft diameter (mm) and tolerance
  • • Bearing housing end cover type and dimensions
  • • Equipment speed (rpm) and lubrication method
  • • Operating temperature range
  • • Protection level requirement (IP66/IP67)
  • • Medium type: oil / grease / water / corrosive
  • • Axial movement and runout
  • • Equipment type and industry application

⚡ Shaft Grounding Ring Selection

  • • Motor power (kW) and rated voltage
  • • Shaft diameter (mm) at grounding point
  • • Bearing housing type (inboard / outboard)
  • • Mounting position relative to bearing
  • • VFD switching frequency (if applicable)
  • • Operating temperature range
  • • Required grounding resistance
  • • Industry standard requirement (ATEX, IECEx, etc.)

🔮 Nanocrystalline / Amorphous Core Selection

  • • Application type (OBC, VFD, UPS, PSU)
  • • Operating frequency range (kHz / MHz)
  • • Required inductance or impedance
  • • Current rating (A)
  • • Available space (OD × ID × height)
  • • Core loss requirement
  • • Material preference (nanocrystalline / amorphous)
  • • Required certifications (CE, UL, etc.)

Not Sure What You Need?

Our technical team provides free selection support. Send us your motor nameplate data or application details and we'll recommend the optimal solution.

Request Free Technical Support
Request for Quote

RFQ Form

Complete the form below with your motor and shaft specifications. Our technical team will review and respond within 24 hours with a tailored quotation.

Measurement Diagram
Measurement Units

Please supply all dimensions to 3 decimal places.

Shaft & Housing Measurements (refer to diagram above)

If applicable — leave blank if none

If applicable — leave blank if none

If applicable — leave blank if none

If applicable — leave blank if none

Application Data
Bearing Data
Mounting & Environment
Contact Information

Clicking will open your email client with a pre-filled message to sales@sungturn.com

Your RFQ has been prepared. Please send the email from your email client to complete the submission.
FAQ

Frequently Asked Questions

How do I select the right nanocrystalline core for my application?
Key factors include: operating frequency, required inductance, current rating, and physical size constraints. For EV chargers (10-150 kHz), we typically recommend cores with permeability of 50,000-100,000. Contact our technical team with your specifications for a free recommendation.
What shaft diameter range do your shaft grounding rings cover?
Our standard range covers 6mm to 500mm shafts. For shafts outside this range, we offer custom manufacturing. Please provide your motor nameplate data or shaft dimensions for selection assistance.
What is the difference between a shaft grounding ring and a carbon brush?
Shaft grounding rings use conductive microfiber technology that maintains consistent contact resistance (<1Ω) over time, unlike carbon brushes which wear down and require maintenance. Rings also work at much higher surface speeds and don't generate particles that can contaminate bearing oil.
Can bearing isolators be installed without disassembling the equipment?
Split-type bearing isolators are available for installation without full disassembly. However, proper installation typically requires access to the bearing housing. Contact us for split designs or installation guidance.
What certifications do your products have?
Our supply chain partners hold ISO 9001, IATF 16949 (automotive), CE, and RoHS certifications. Specific products also carry API 610/682 compliance for petrochemical applications. Material test reports (MTR) available upon request.
What is your typical lead time for samples and orders?
Sample delivery typically takes 7-14 business days. Production orders ship within 2-4 weeks depending on quantity and customization requirements. Expedited options available for urgent projects.
Do you offer custom OEM / private label services?
Yes, we offer full customization including dimensions, materials, certifications, and private labeling. Our technical team will work with your specifications to develop a tailored solution.

Still Have Questions?

Our technical team is here to help with product selection and application support.

Contact Technical Support