A core answer does not complete every physical axis. Each field below is shown only when current accepted OEM evidence establishes it; all other axes remain explicitly unestablished.
Bobbin
Bobbin class or system
Not established in current accepted evidence
Exact OEM Bobbin part
Not established in current accepted evidence
Bobbin material and dimensions
Not established in current accepted evidence
Loading style
Not established in current accepted evidence
Bobbin case
Not established in current accepted evidence
Hook system
全回転自動給油釜
View hook system evidence · 1 unique proof passage:Proof E4
Important: loading style does not establish Bobbin class, hook orientation, or interchangeability.
Needle
Needle system or type
DB×1
View needle system or type evidence · 1 unique proof passage:Proof E5
Supported sizes
Not established in current accepted evidence
Exact OEM Needle part
Not established in current accepted evidence
Needle count and insertion
Not established in current accepted evidence
Twin or special-use limits
Not established in current accepted evidence
Important: a recommendation is not an exclusive system requirement unless the OEM says so.
Presser foot
Attachment or mount
Not established in current accepted evidence
Shank or presser-bar geometry
Not established in current accepted evidence
Holder or ankle
Not established in current accepted evidence
Adapter requirement
Not established in current accepted evidence
Stitch-width and clearance limits
Not established in current accepted evidence
Dual-feed or walking-feed system
Not established in current accepted evidence
Important: a Snap-On attachment does not establish shank height, holder geometry, stitch-width family, or broad foot fitment.
Machine facets and OEM groups
Cited machine facets
Identity and compatibility badges
Identity families, physical traits, and OEM accessory groups stay separate. A group badge applies only to its named program and domains.
hook type全回転自動給油釜needle systemDB×1
Detailed specifications, compatible parts, and source library
Unknown is not incompatible. A missing answer means the current official evidence does not support one yet.
Specifications
Documented machine facts
Multiple cited representations for one field share one row. SewGraph preserves every value and exact proof passage; it does not guess which representation is “raw” or “normalized” when the public projection does not label that distinction.
Open the exact OEM PDF page or captured HTML edition when a safe destination exists; otherwise SewGraph labels the OEM support-page fallback honestly.
DDL-8700 parts list
parts
Open official source destination · 1 unique proof passage:Proof E2
DDL-8700 specifications brochure
brochure
Open official source destination · 1 unique proof passage:Proof E1
Evidence library
5 exact proof passages from 2 OEM documents
Every passage below says exactly what visible fact it proves. Repeated references to the same locator are counted once; identity evidence never counts as compatibility evidence.
Open exact proof passages · 5 unique proof passages