BTC, NSK, NTN & Timken 688 Bearings

Shop 688 Ball Bearings

Shop 688 ball bearing options at BMG for compact rotating assemblies, miniature mechanisms, small motors, fans, tools, rollers and light machinery maintenance. Compare BTC, NSK, NTN and Timken 688 bearings online by seal type, shield type, bore, outside diameter, width, clearance, brand and application fit.

Shop 688 Bearings View Selection Guide 
Miniature bearing size Compare 688 miniature bearing options commonly built around an 8 mm bore and 16 mm outside diameter.
Multiple bearing brands Browse available BTC, NSK, NTN and Timken 688 options in one BMG collection.
Suffix-led selection Check ZZ, 2RS, VV, clearance, width and other suffix details before selecting a replacement.

Category Focus

688 ball bearings are miniature deep groove or radial ball bearing options used where compact size, smooth rotation and light-duty bearing support are required.

Brands BTC, NSK, NTN & Timken
Category 688 Ball Bearing
Core check 8 mm bore, 16 mm OD
Buying intent Miniature bearing replacement

Start with the suffix

Confirm the exact 688 suffix, shield or seal type, width, clearance and manufacturer code before ordering, as dimensions can vary by series.

 

Choose 688 Ball Bearings for Miniature Rotating Equipment

688 ball bearings are selected where compact shafts, rollers and rotating parts require a small miniature bearing format. BMG’s 688 bearing collection helps buyers compare BTC, NSK, NTN and Timken options for small motors, fans, tools, rollers, compact equipment repairs and general light-duty maintenance replacement work.

Shielded and Sealed Options

Compare 688 bearing suffixes such as ZZ, 2RS, VV and other closure types where protection level, friction and contamination exposure differ.

Width and Series Checks

Review the full manufacturer code carefully because some 688 variants share the same bore and outside diameter while differing in width.

Brand and Availability Comparison

Compare available BTC, NSK, NTN and Timken 688 bearings by stock status, suffix, construction, clearance, width and application fit.

688 Ball Bearings Miniature bearing options commonly selected around an 8 mm bore and 16 mm outside diameter.
Miniature Bearings Compact bearings used where space is limited and smooth rotation is required.
Deep Groove Bearings Common ball bearing format used for radial support and low-friction rotation.
ZZ Shielded Bearings Metal-shielded options where added protection is needed with lower contact drag.
2RS Sealed Bearings Rubber-sealed options where dirt, dust or moisture exposure needs closer control.
VV / Non-Contact Seals Selected where the listed bearing uses low-friction seal construction.
Small Motor Bearings Compare by speed, noise, lubrication, closure type and operating environment where relevant.
Replacement Bearings Match the old bearing code and suffix before ordering a replacement.

What to Compare Before You Buy

The correct 688 ball bearing depends on the full suffix, width, seal or shield type, clearance, material, lubrication, speed and installation environment. Start with the bearing already fitted to the machine, then match the full product code as closely as possible.

  • Confirm the full bearing code, including suffixes such as ZZ, 2RS, VV, C3 or other configuration details.
  • Check the core dimensions carefully, especially bore, outside diameter and width.
  • Match shielded, sealed or open construction to the application environment and contamination exposure.
  • Review clearance, cage, lubrication, speed and noise requirements where shown in the product listing.
  • Consider shaft fit, housing fit, operating temperature, load, moisture exposure and maintenance access.
  • Use the BMG listing to compare BTC, NSK, NTN and Timken 688 bearing options online.

Common Uses for 688 Ball Bearings

688 ball bearings are commonly used in miniature rotating assemblies, small motors, fans, compact rollers, tools, light machinery, equipment repairs, workshop maintenance and applications where a small bearing envelope is specified.

For replacement work, check the old bearing markings before ordering. A 688 bearing may share the same base code while differing by width, seal type, shield type, clearance or lubrication configuration, so the suffix is important.

688 Ball Bearing FAQs

What size is a 688 ball bearing?

Many 688 miniature bearing variants use an 8 mm bore and 16 mm outside diameter, but the width can vary by manufacturer and suffix. Always confirm the exact product code before ordering.

Can I buy 688 ball bearings online from BMG?

Yes. Use the BMG 688 product listing to browse available BTC, NSK, NTN and Timken 688 bearing options online.

What does 688 ZZ mean?

688 ZZ usually refers to a 688 bearing with metal shields on both sides. Match the existing suffix because shielded and sealed bearings are not the same.

What does 688 2RS mean?

688 2RS usually indicates rubber seals on both sides. Check the supplier listing because suffix wording can differ between brands.

Is every 688 bearing 8 mm x 16 mm x 5 mm?

No. Some 688 variants are listed as 8 mm x 16 mm x 5 mm, while other manufacturer-specific versions may use a different width. Confirm the product data before ordering.

Which brands supply 688 bearings at BMG?

The supplied BMG listing is positioned for BTC, NSK, NTN and Timken 688 ball bearing options, subject to current stock and product availability.

Shop 688 Ball Bearings at BMG

Browse BMG’s 688 ball bearing range online for BTC, NSK, NTN and Timken options used across miniature mechanisms, small motors, fans, tools, rollers and compact equipment replacement applications.

Shop 688 Bearings