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
Machine position
Identify guide, follower, arbor, spindle or feed roller and the forces it receives.
Geometry
Record guide width, contact face, shaft/fastener details and any required eccentric adjustment.
Dust and speed
Assess fine-dust exclusion, speed, runout and heat without assuming that all sealed bearings have the same friction.
Which bearing structures make sense?
Small guide/follower bearings
Investigate only where the tool drawing defines a compatible rolling contact.
Check first: Outer diameter and edge geometry can determine the cut; a size change can be unsafe.
Arbor/spindle supports
Preserve the specified bearing pair, preload and shaft retention.
Check first: A guide bearing is not a substitute for a precision cutting spindle support.
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 selectionDimensional references for independently identified rotating supports. No saw, router-bit or blade-guide fitment is implied. 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 selectionDimensional references for independently identified rotating supports. No saw, router-bit or blade-guide fitment is implied. Confirm the exact loading, sealing, lubrication and speed specification.
Open complete model data6004
20×42×12 mmRotary support · 20 mm bore
A 20×42×12 mm reference for a separately sized shaft-support arrangement.
- Dynamic C
- 9.95 kN
- Static C₀
- 5 kN
- Limiting speed
- 24000 rpm
Before selectionDimensional references for independently identified rotating supports. No saw, router-bit or blade-guide fitment is implied. Check complete dimensions and support loads; not a machine-brand fitment recommendation.
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 | SKF6004 |
|---|---|---|---|
| Bore d (mm) | 8 | 12 | 20 |
| Outside D (mm) | 22 | 28 | 42 |
| Recorded width (mm) | 7 | 8 | 12 |
| Dynamic C (kN) | 3.45 | 5.4 | 9.95 |
| Static C₀ (kN) | 1.37 | 2.36 | 5 |
| Catalogue limiting speed (rpm) | 48000 | 38000 | 24000 |
— = 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 exact support and obtain the machine/tool specification.
- Check geometry, operating speed, loading and required accuracy.
- Verify sealing, lubrication, fit and axial settings for that position.
- Follow the equipment's guarding, balance and commissioning procedure.
Symptoms worth checking
Blade wander
Inspect guide setting, blade condition, wheels and alignment as a system.
Burning or rough cut
Check tool condition, runout, feed and support behavior before assuming a bearing fault.
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 a different outer-diameter router-bit bearing be used?
Only if the tool design specifically permits it. The follower diameter changes the guided cutting path.
Are bandsaw thrust guides and axial thrust bearings the same thing?
The word thrust can describe the guide's function, not necessarily the bearing's catalogue family. Verify the actual component.
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.