Before choosing a part
Compatibility essentials
Start with these documented details. Read the requirements with each answer before choosing a needle, bobbin or foot.
- Foot attachment
- Needle system / designation
- Needle sizes by fabric and use
- Bobbin part / pack reference
Not yet confirmed here: Manufacturer accessory group, Foot interface / generation, Bobbin material, Bobbin diameter, Hook type, Maximum stitch / zigzag width, Feed system, Bobbin loading direction. What is still to confirm →
Model & names
- Model
- Baby Lock Katherine
Other names, regional versions and related models have not been confirmed here. A shared manual, product line or accessory group does not identify the machine's family.
What do you need help with?
Which bobbin class, OEM number and height are documented?
Before you use this answer
Keep the exact model, shared-guide application, same-type and dimensional limits. This does not establish diameter, material, hook type or generic retail substitution.
Documents and page references →How do the ordinary foot and holder attach?
Before you use this answer
Keep the complete original holder and secure-attachment conditions. Snap-on operation and a holder screw do not establish shank classification or universal screw-on fit.
Documents and page references →Which needle system and fabric-dependent sizes are documented?
Before you use this answer
Read the original OEM fabric/thread/point chart and ordered conditions. The stated range is not an all-fabric recommendation.
Documents and page references →What sewing-speed range does the guide list?
Before you use this answer
Retain the source configuration and original range; this is not a stitch-width or embroidery-speed specification.
Documents and page references →How should I clean and oil the machine?
Before you use this answer
Read the original power-disconnection, removal and reassembly instructions with the complete OEM guide. Preserve the no-user-oiling direction; no service procedure is synthesized.
Documents and page references →How does the bobbin go in?
Before you use this answer
Use the exact model and full illustrated path with all original conditions; direction does not broaden bobbin compatibility.
Documents and page references →More questions (2)
When should the holder be removed?
Before you use this answer
The guide names walking and quilting foot configurations. Read the full mounting and clearance directions; no third-party adapter fit is established.
Documents and page references →How do I orient the needle and what are the threader limits?
Before you use this answer
Follow the complete illustrated needle-changing and threader procedures; their ranges and exclusions remain distinct.
Documents and page references →Needle, bobbin & presser-foot details
Read the model-specific requirements with each answer before choosing parts.
Needle
System type
Home sewing machine needle system HA × 130.
Sources and pages
Sizes and use
- Use the size and needle type assigned to the fabric and thread; ball-point 75/11–90/14 is specified for stretch fabrics.
The OEM table covers sizes 65/9 through 100/16, with fabric, thread and point-specific choices.
Sources and pages
Needle insertion
- Tighten the needle-clamp screw securely with the screwdriver.
Insert the needle with its flat side toward the rear until it touches the stopper.
Sources and pages
Needle threader limits
- Do not use the threader with a wing needle or twin needle; specialty and transparent monofilament threads are not recommended with it.
The needle threader supports machine-needle sizes 75/11 through 100/16.
Sources and pages
Bobbin
Class system
Class 15 type.
Sources and pages
OEM part number
- The manual says to use the included bobbin or the same X52800-120 type and warns against bobbins from other models.
Baby Lock X52800-120.
Sources and pages
Dimensions profile material
- The reviewed passage establishes height and OEM type; material and broader substitution equivalence remain unknown.
Approximately 11.5 mm (7/16 inch) high.
Sources and pages
Bobbin insertion
- Hold the bobbin down and guide the thread through the needle-plate-cover slit as shown by the OEM instructions.
Insert the bobbin in its case with the thread unwinding to the left.
Sources and pages
Hook type
Not yet verified- Not yet verified: The reviewed passages do not establish the site’s standardized hook orientation or drive classification.
Attachment mount mechanism
- Align the foot pin with the holder notch and lower the holder until it snaps on. This establishes the foot-to-holder connection only.
Ordinary presser feet snap onto the presser-foot holder.
Sources and pages
Holder ankle geometry
- Use a screwdriver to remove or attach the holder. This establishes the OEM holder arrangement, not a standardized shank class.
The presser-foot holder is removable and secured to the presser bar by its holder screw.
Sources and pages
Named holder removal
- The passage names these foot types but does not establish every compatible walking or quilting foot.
Remove the holder when installing a walking foot or quilting foot that does not use it.
Sources and pages
Presser-foot shank · manufacturer wording
Not yet verified- Not yet verified: The reviewed passages do not state a low-, high- or other standardized shank class.
Generic screw on fit
Not yet verified- Not yet verified: The holder screw does not establish that generic low-shank screw-on feet fit.
Third party adapters
Not yet verified- Not yet verified: No third-party adapter compatibility is established.
Shank type
- Only exact accepted Katherine BL210A and this retained Baby Lock August2025 accessory catalog; other names, suffixes, generations and regions remain separate.
- This is a manufacturer chart classification, not dimensions, a universal adapter/holder promise, an offered retail unit, supplied equipment or proof that every accessory in the group fits. Follow exact manual and accessory conditions.
- Keep the printed G/L code: G is the accessory group; L uses the existing evidence engine low-shank mapping. No measured shank height, interchangeable holder or generic foot fit is established.
Low shank (the OEM group/shank chart prints G/L).
Sources and pages
Specifications & documented facts
Specifications apply to the named model and document edition. Read any setup, fabric or safety requirements with the answer.
Performance & stitch capabilities
Sewing speed
70–850 stitches per minute.
Sources and pages
Owner features
Dimensions
Approximately 480 mm wide × 300 mm high × 249.4 mm deep (18-7/8 × 11-7/8 × 9-7/8 inches).
Sources and pages
Weight
Approximately 9.7 kg (21.3 lb).
Sources and pages
Lubrication
- If the handwheel becomes difficult to turn or unusual noise occurs, stop and contact an authorized Baby Lock retailer.
Do not oil the machine yourself; periodic user oiling is unnecessary.
Sources and pages
Cleaning
- Unplug the machine first, remove the needle-plate cover and bobbin case, and do not oil the bobbin case.
Clean lint and dust from the race and surrounding area with the cleaning brush or a vacuum.
Sources and pages
Care, setup & service references
Use the full source procedure and its safety precautions. A short referenced answer is not a substitute for service documentation or qualified electrical/mechanical repair.
Service-manual availability and service-only procedures remain unestablished unless separately cataloged and reviewed.
Coverage and source-review limits
The source author checked these shared-manual answers; automated source and delivery checks supported that work. Attaching a foot to its holder does not establish a standard shank classification or compatibility with other feet.
Coverage and remaining questions
- Operating manual
- Listed below; check the edition and available link.
- Exact OEM part application
- No model-specific part application is listed here.
Still to confirm
An unanswered question does not mean a part is incompatible. We have not confirmed enough information to recommend it.
Presser foot — Presser-foot shank · manufacturer wording: Not established Full recorded limit & conditions →
Presser foot — Generic screw on fit: Not established Full recorded limit & conditions →
Presser foot — Third party adapters: Not established Full recorded limit & conditions →
Bobbin — Hook type: Not established Full recorded limit & conditions →
Other names, regional versions, production history, further specifications and documents are not fully covered here. Their absence is not a “none exist” finding.
Next evidence targets
- Source-native shank wording, generic screw-on fit and third-party adapters remain unestablished.
- The listed bobbin height does not establish material, diameter, hook type or universal substitution.
- Shared manual coverage does not merge model identities or establish retail compatibility.
These are research questions, not claims that the missing relationship exists.
Sources and page references
Each answer links to its exact evidence passage below. Open a reference to see the document and page. These links identify the source; they do not include the full manual or its diagrams. Document access is consolidated in the OEM library above.
Document and page references (14)
Editorial responsibility & corrections
Alex Shick · Founder and editor. Corrections managed by Alex Shick.
This Baby Lock Katherine guide is based on documents, with AI assistance to organize the information. We have not tested or repaired the machine.
Check the document edition with each answer. A source review date is not a machine inspection date or a promise that the manual is the latest edition.
Contact the SewIndex team or report a correction ↗
The correction address has been tested and its monitoring confirmed. We cannot promise a response or accept every suggested change.
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About this information
Answers come from the documents named on this page. They describe those editions, and may not cover later changes to the machine or manual.