Keep the evidence with the model shortlist
The models on this page illustrate bearing roles; they are not confirmed replacements for an unspecified machine. Keep the original complete marking, machine position, load and speed duty, temperature, lubricant and mounting arrangement together. Check the candidate's recorded values below and leave unreported parameters unknown.
Check drawings and model records · Investigate a failure before replacing it · Plan installation and force paths
What matters in this application
Mechanism
Identify spinning spindle, feed shaft, roller, needle drive or linkage before selecting a bearing type.
Motion and accuracy
Record speed, reversals, shaft deflection and permissible runout/noise.
Contamination
Control lint and prevent lubricant migration onto fabric while preserving adequate bearing lubrication.
Which bearing structures make sense?
Small deep-groove supports
Investigate for a conventional rotating shaft with suitable radial and axial loading.
Check first: Match the exact clearance, seals and lubricant; light loading can be important at high speed.
Precision spindle assemblies
Use the specified spindle construction and bearing set.
Check first: A standard miniature bearing does not establish spindle precision.
Recommended starting points
These candidates illustrate specific roles and envelopes, not a ranked list or interchangeable set. Review each condition before using a model in a design.
608
8×22×7 mmSmall rotating support · 8 mm bore
A compact 8×22×7 mm reference for a designed rotary support or roller.
- Dynamic C
- 3.45 kN
- Static C₀
- 1.37 kN
- Limiting speed
- 48000 rpm
Before selectionSmall rotating-shaft envelope references, not fitment recommendations for a sewing-machine or textile-spindle model. Check load, seals, fits, clearance and actual shaft speed; this is not a linear bushing.
Open complete model data6001
12×28×8 mmCompact rotary support · 12 mm bore
A 12×28×8 mm deep-groove envelope to investigate where the shaft and housing design match.
- Dynamic C
- 5.4 kN
- Static C₀
- 2.36 kN
- Limiting speed
- 38000 rpm
Before selectionSmall rotating-shaft envelope references, not fitment recommendations for a sewing-machine or textile-spindle model. Confirm the exact loading, sealing, lubrication and speed specification.
Open complete model dataCompare the recorded specifications
Different sizes and bearing structures are shown for different duties. C and C₀ are catalogue load ratings, not permissible equipment loads. Limiting speed is not an approved operating speed.
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| Parameter | SKF608 | SKF6001 |
|---|---|---|
| Bore d (mm) | 8 | 12 |
| Outside D (mm) | 22 | 28 |
| Recorded width (mm) | 7 | 8 |
| Dynamic C (kN) | 3.45 | 5.4 |
| Static C₀ (kN) | 1.37 | 2.36 |
| Catalogue limiting speed (rpm) | 48000 | 38000 |
— = not reported, or not directly comparable for a mounted unit. Width conventions differ for inserts, complete units and bearing assemblies; inspect the dimensional drawing. Values are read from the current BearingScope records, not estimated from model numbers.
Work through the selection
- Identify the shaft function and complete original bearing marking.
- Calculate duty and establish runout, noise and product-cleanliness requirements.
- Verify seals, lubricant and fits for the specific mechanism.
- Check alignment, lint control and controlled running temperature after service.
Symptoms worth checking
Noise at high speed
Inspect fits, balance, lubrication and the specified clearance.
Lint packed around seals
Review guarding and cleaning without washing contamination into the bearing.
Symptoms are investigation prompts, not a diagnosis. Isolate equipment safely and follow its maintenance procedures before inspection.
Have the original designation?
Look up the complete model and suffix before comparing potential alternatives.
Application questions, answered
Can any 608 be used in an industrial sewing machine?
No. A shared basic size does not confirm clearance, seals, grease, precision or machine fit.
Does more grease prevent lint damage?
Not necessarily. Excess grease can increase heat and contaminate fabric. Follow the specified lubricant quantity and sealing arrangement.
Reference basis & recommendation limits
- SKF — Bearing selection process
Application principles are informed by the listed technical references. Model shortlists are BearingScope editorial selections from its database, not manufacturer endorsements or equipment-fit approvals. Confirm the latest exact specification and the complete equipment design before use.