JUKI DDL-8700-7 / 8100-7 / 7000A / 9000 / 900 UBT Spare Parts

The “-7” and “UBT” (Under Bed Trimmer) designations mark JUKI’s automatic thread-trimmer versions of the DDL platform — the 8700-7, 8100-7, 7000A, 9000, and 900 UBT models. These machines share the same core lockstitch mechanism as the standard DDL-8700, but add a built-in mechanism that automatically cuts the thread after each seam, along with the extra control electronics and wiring that mechanism needs. This category holds spare parts specifically for these automatic-trimmer models.

What’s In This Category

• Feed dogs and needle plates
• Presser feet and presser foot assemblies
• Bobbin cases, bobbins, and bobbin winder assemblies
• Hook and shuttle components
• Thread trimmer solenoids and knives
• Thread tension sets and thread guides
• Control box components, sensors, and connectors
• Speed control pedals
• Needle clamps, springs, and small hardware

Why the “-7” and “UBT” Suffix Matters

A DDL-8700 and a DDL-8700-7 look almost identical and share the same stitching mechanism, but the -7 model has an automatic thread trimmer built in — extra solenoid, sensor, and control box wiring that the base model simply doesn’t have. That means control boxes, foot pedals, and trimmer-related parts are usually not interchangeable between a base model and its -7/UBT counterpart, even though most purely mechanical parts (feed dogs, needle plates, presser feet) still are. Always confirm the exact suffix on your machine’s data plate before ordering electronic or trimmer-related parts.

Signs a Part Needs Replacing

• Skipped or uneven stitches — feed dog or needle plate wear, or an incorrect needle.
• Thread breaking or looping — tension assembly first, then check for a burred needle plate or worn hook.
• Thread not trimming automatically, or trimming inconsistently — the mechanism unique to these -7/UBT models; check the trimmer solenoid, knife, and its control box connection before assuming a bigger fault.
• Machine doesn’t respond correctly to the pedal, or runs at an unexpected speed — usually the control box or pedal connector rather than a mechanical fault.
• Error codes or the machine won’t start — check the control box and its connections before assuming a bigger electrical fault.
• Bobbin winding unevenly — bobbin winder assembly or its rubber wheel.

Original vs Compatible Parts

Because the control box, sensors, and hook assemblies on these revised models are more tightly matched to the specific machine revision, we’d recommend verifying the part number on your existing component wherever possible for electronics — mechanical wear parts like presser feet and needle plates are more forgiving.

Who This Category Is For

Garment manufacturing units, tailoring and alteration shops running newer direct-drive JUKI machines, sewing machine mechanics, and dealers servicing the revised DDL-7/UBT range.

Ordering From StitchPartner

We deliver across India with Cash on Delivery available on eligible orders. If you’re not certain whether your machine is the base model or the -7/UBT revision, send us a photo of the data plate and the part you need, and we’ll help confirm before you order.

Frequently Asked Questions

Is a DDL-8700 part the same as a DDL-8700-7 part?

Mechanical wear parts like feed dogs, needle plates, and presser feet usually fit both. The -7 model adds a built-in automatic thread trimmer, so its control box, trimmer solenoid, and related wiring are specific to the -7/UBT version and won’t fit a base DDL-8700 that lacks the trimmer.

What does “UBT” mean on a JUKI model number?

UBT stands for Under Bed Trimmer — JUKI’s designation for models with a built-in automatic thread-cutting mechanism, matching the “-7” suffix used on models like the DDL-8700-7. If your machine’s data plate shows UBT or a -7 suffix, order trimmer and control box parts specifically listed for that variant.

Where do I find the exact model suffix on my machine?

Check the data plate near the handwheel or on the machine arm — it will show the full model number including any -7 or UBT suffix. This is the most reliable way to confirm compatibility before ordering electronic parts.

Do you offer Cash on Delivery on these parts?

Yes, COD is available on eligible orders and locations across India, along with prepaid card and UPI payment at checkout.

Can I order these parts in bulk for a factory?

Yes, contact our support team for help with larger or recurring orders for garment units and repair shops.