The BERNINA CB Bobbin Case Standard is a replacement or spare bobbin case for selected BERNINA sewing and embroidery machines fitted with the traditional CB hook system. Listed under BERNINA part number 0015347150 (also formatted as 001534.71.50 ), it holds the compatible CB-hook metal bobbin and guides the lower thread through the bobbin-case tension system.
This is the standard case for everyday sewing and compatible machine embroidery—not the separate specialty case intended for heavy-thread bobbinwork. Because BERNINA has used several different hook and bobbin systems, confirming your exact machine model and hook type before ordering is essential.
Why choose this CB bobbin case?
- Suitable as a replacement for a lost, damaged or worn standard bobbin case.
- Useful as a spare for compatible BERNINA machines using the CB hook system.
- Designed for normal sewing and compatible embroidery applications.
- Matches the CB-hook bobbin system used by the compatible models listed below.
- BERNINA part number makes it easier to compare the component with your machine records, manual or existing case.
Verified product details
| Brand | BERNINA |
|---|---|
| Product type | Standard bobbin case |
| Hook system | CB hook |
| Part number | 0015347150 / 001534.71.50 |
| Intended applications | Standard sewing and compatible machine embroidery |
| Matched bobbin type | BERNINA CB-hook metal bobbin |
| Product listing | Bobbin case; a bobbin is not specified as included |
BERNINA machine compatibility
This bobbin case is listed for the following CB-hook machines. Model names can be similar across different generations, so check the complete model designation rather than relying on the series number alone.
BERNINA mechanical and numbered models
- Most old Bernina Mechanical Models
- BERNINA 1008
- BERNINA 215
- BERNINA 215 Simply Red
- BERNINA 325
- BERNINA 330
- BERNINA 335
- BERNINA 350 PE
- BERNINA 380
- BERNINA 530
- BERNINA 550 QE
- BERNINA 555
- BERNINA 570 QE (legacy/LUN version only)
BERNINA activa models
- BERNINA activa 125
- BERNINA activa 135
- BERNINA activa 145
- BERNINA activa 210
- BERNINA activa 220
- BERNINA activa 230
- BERNINA activa 240
BERNINA artista and aurora models
- BERNINA artista 165
- BERNINA artista 170
- BERNINA artista 630
- BERNINA artista 635
- BERNINA aurora 430
- BERNINA aurora 440 QE
Important BERNINA 570 QE note:Â this compatibility refers to the legacy 570 QE/LUN machine named in the listing. Current and second-generation B 570 QE machines use the larger BERNINA Hook system and require a different bobbin case.
Check the hook system before buying
A BERNINA model number alone does not always identify the required bobbin case. BERNINA machines may use a CB Hook, Rotary Hook, B9 Hook, newer BERNINA Hook or another model-specific system. Bobbin cases and bobbins from these systems are not interchangeable.
This product is not a B9 jumbo bobbin case and should not be selected for a machine simply because it is described as a BERNINA 4, 5 or 7 Series. Check the machine’s full name, generation, hook type and existing part before ordering. If your machine is not shown above, contact Two Petals with its complete model designation and, where possible, a photo of the existing bobbin case or hook area.
When should a bobbin case be replaced?
A replacement may be appropriate when the original case is missing, visibly damaged, bent, heavily scratched or no longer latching correctly. It can also be useful to keep a standard spare on hand for a compatible machine.
Uneven stitching, thread nests and lower-thread tension problems do not always indicate a faulty bobbin case. Before replacing the part, also check that:
- The upper thread has been threaded correctly with the presser foot raised.
- The bobbin is the correct CB-hook type and is wound evenly.
- The bobbin has been inserted and threaded in the direction shown in the machine manual.
- Lint and broken thread have been removed from the hook and bobbin area.
- The needle is suitable, correctly inserted and not bent or blunt.
- The bobbin case and hook have no caught thread or visible damage.
If problems continue after rethreading and cleaning, the machine may require inspection rather than a tension adjustment. Two Petals is an authorised BERNINA dealer and service technician in Melbourne’s south-east.
Standard case versus a bobbinwork case
This is the standard CB bobbin case for regular lower-thread setups. BERNINA also produces a separate CB-hook bobbinwork case for specialty techniques using heavier decorative thread in the bobbin. The two products serve different purposes.
Choose this standard case for normal sewing and compatible embroidery. If you want to work with cordonnet, ribbon or another unusually heavy decorative bobbin thread, confirm that you need the dedicated bobbinwork case instead.
Installation and care
- Switch off the machine and raise the needle fully before working in the hook area.
- Use the correct BERNINA CB-hook metal bobbin.
- Insert and thread the bobbin according to the diagram in your machine’s manual.
- Hold the bobbin-case latch and position the case as instructed for your model.
- Press it into place only until it seats correctly—do not force an unfamiliar part into the hook.
- Before sewing your project, test the upper and lower threading on a fabric offcut.
Avoid changing the small bobbin-case tension screw unless your machine manual or a qualified technician specifically directs you to do so. Small adjustments can make a noticeable difference to lower-thread tension.
Frequently asked questions
Will this bobbin case fit every BERNINA sewing machine?
No. It is made for selected machines using the CB hook system. It does not replace bobbin cases made for the Rotary Hook, B9 Hook, newer BERNINA Hook or Q Series hook systems.
Does it fit the BERNINA B 325 and B 335?
Yes. The B 325 and B 335 use the CB hook system and are included in the compatibility list.
Does it fit a BERNINA 570 QE?
Only the legacy 570 QE/LUN version listed for this part. It does not fit current or second-generation B 570 QE machines fitted with the newer BERNINA Hook. Check the complete model generation before ordering.
Can I use it for embroidery?
The standard CB case is intended for sewing and compatible machine embroidery. Embroidery capability still depends on the specific machine and its equipment.
Is this the case for heavy-thread bobbinwork?
No. BERNINA identifies a separate CB-hook bobbinwork case for specialty techniques using thicker decorative bobbin threads. This product is the standard case.
Is a bobbin supplied with the case?
A bobbin is not specified as included. Compatible CB-hook metal bobbins can be found with other BERNINA accessories at Two Petals .
Can a new bobbin case fix thread jams or poor tension?
It may help if the original case is bent, damaged, badly scratched or has a faulty latch or tension component. However, thread jams can also be caused by incorrect threading, an unsuitable bobbin, lint, a damaged needle or a machine timing issue. Inspect and rethread the machine before assuming the case is the cause.
Should I adjust the tension screw?
Not as a first troubleshooting step. Standard bobbin tension is normally left unchanged for everyday sewing. If adjustment appears necessary, consult the machine manual or a BERNINA service technician.
How can I confirm compatibility if my model is not listed?
Check the model plate and manual for the hook system, then compare the part number with your existing case. You can also contact Two Petals with the full machine model and a clear photograph of the hook area before purchasing.
Buying summary
Choose the BERNINA CB Bobbin Case Standard when you need part 0015347150 for one of the listed CB-hook machines. It is a practical replacement or spare for standard sewing and compatible embroidery, but it must be matched to the correct hook system and machine generation.
For additional components, browse BERNINA sewing machine parts or the wider range of BERNINA accessories available from Two Petals in Pakenham.
