Bed type · Footwear · Bags · Upholstery · 7 min read
Post bed vs cylinder bed.
Flat-bed machines work for flat panels. Anything 3-D — boots, bags, hats, drum cushions — needs a different bed geometry. The two industrial answers are post bed and cylinder bed, and they're not interchangeable.
At a glance
| Bed type | Geometry | How work is presented | Typical products | Speedway examples |
|---|---|---|---|---|
| Post bed | Throat plate on a vertical column rising from the body | Workpiece wraps around the column laterally; vertical access from below | Shoe uppers, hat brims, bag handle anchors, motorcycle seats | SW-810, SW-820, SW-82440-45-R1, DECO 2780 |
| Cylinder bed | Throat plate on a horizontal arm extending from the body | Closed tube slips over the arm; rotated around a horizontal axis | Boot shafts, saddle skirts, drum cushions, tubular bags, sleeve hems | SW-335, SW-335L |
Flat bed— the standard configuration. The throat plate sits flush with the table; the workpiece slides across it horizontally. What every "sewing machine without further qualification" runs.
Cylinder bed — the throat plate is the top of a horizontal arm extending out from the body. The workpiece slips over the arm like a sleeve over a forearm. The arm is typically 2-4 inches in diameter, 6-12 inches long.
Post bed — the throat plate is on top of a vertical column extending up from the body. The needle drops into the post; the workpiece wraps around the column laterally. The post is typically 4-8 inches tall, narrow at the top (around 1-2 inches) and slightly wider at the base.
All three exist because workpiece geometry varies. Flat for panels. Cylinder for tubes. Post for vertical 3-D shapes.
Anywhere the workpiece is a closed tube and the operator needs to sew either inside the tube or around the outside without fighting the geometry.
- Boot shafts: leather boot shafts slip over the cylinder; operator rotates the shaft around the arm to stitch around the inside.
- Saddle skirts: curved tubular saddle construction wraps the cylinder for welt seams.
- Drum cushions: cylindrical ottoman covers, tubular bag bodies — anywhere a closed cylinder needs to be seamed without disassembly.
- Sleeve hems on coverstitch: cylinder-arm coverstitch (SW-662-01/CB UTE) for set-in sleeves on t-shirts and athletic apparel.
The defining cylinder-bed property: the workpiece slides across the arm horizontally. If your work is 3-D but the seam line wraps a horizontal axis, cylinder bed is what you need.
Speedway covers this with the SW-335 and SW-335L (heavy-duty cylinder bed walking foot, large bobbin variant for production volumes on heavy thread).
Anywhere the workpiece is 3-D but the seam wraps a vertical axis, or where the operator needs access from below to a pre-assembled item.
- Shoe upper construction: vamp-to-quarter seams on assembled shoe uppers; the upper wraps the post, operator rotates around the column.
- Hat brim attach: brim-to-crown seam on a wool felt hat. Post bed sits inside the hat opening; the operator runs the seam around the brim without lifting.
- Bag handle anchor reinforcement: attaching strap anchors to a finished tote or backpack body. Post bed reaches inside the assembled bag.
- Motorcycle seats: welted cushion construction on a 3-D foam base. Post bed wraps the curved seat profile.
The defining post-bed property: vertical access. If your work is 3-D and the seam line is more vertical than horizontal, post bed is what you need.
Speedway covers this with the SW-810 (single-needle post-bed lockstitch), the SW-820 (double-needle post-bed for parallel decorative or reinforced rows), the extra-tall SW-82440-45-R1 (for boot shafts and luggage with vertical clearance flat-bed alternatives can't handle), and the DECO 2780 (decorative double-needle post-bed for branded leather goods).
The geometry of the workpiece tells you. Hold the assembled piece in front of you and look at where the seam runs.
Seam line is horizontal around the workpiece— you'd rotate it around an axis lying flat — that's cylinder bed work. Boot shafts, sleeves, drum bodies, tubular bags.
Seam line is vertical / wraps a vertical curve — you'd rotate it around a vertical axis — that's post bed work. Shoe uppers, hat brims, bag handle anchors, tall ottomans.
Some workpieces have both kinds of seams — a complete leather boot has post-bed work on the upper assembly and cylinder-bed work on the shaft. High-volume footwear shops typically run both kinds of machines on the line and route the work between them per operation.
For shops just spec'ing one of the two: if the work is footwear or hats, post bed first. If the work is boot shafts, saddle skirts, or apparel sleeve hemming, cylinder bed first.
Speedway across both bed types
Single, double, decorative, extra-tall — across both geometries.
Sewing Machines
SW-810 Single Needle Post-bed Lockstitch Industrial Sewing Machine with Servo Motor, Table and Stand Included
- Bed Post bed
- Stitch Lockstitch
- Motor Servo
Sewing Machines
SW-820 Double Needle Post-bed Lockstitch Industrial Sewing Machine with Servo Motor, Table and Stand Included
- Bed Post bed
- Stitch Lockstitch
- Motor Servo
Sewing Machines
SW-335L – Cylinder-Bed Heavy Duty Walking Foot Machine – Complete Setup, Table & Stand Included
- Feed Walking foot
- Bed Cylinder bed
- Stitch Lockstitch
Sewing Machines
SW - 82440-45-R1 – Extra-Tall Post Bed Single Needle Unison Feed Walking Foot – Complete Setup, Table & Stand Included
- Feed Walking foot
- Bed Post bed
- Stitch Lockstitch
Sewing Machines
DECO 2780 – Double Needle Post-Bed Decorative Stitch Walking Foot Machine – Complete Setup, Table & Stand Included
- Feed Walking foot
- Bed Post bed
- Stitch Lockstitch
Common questions
- What is a post-bed sewing machine used for?
- A post-bed machine has its throat plate on top of a vertical column extending up from the body, so the workpiece wraps around the post laterally. It's the answer for 3-D work where the seam wraps a vertical axis or where you need access from below to a pre-assembled item — shoe upper construction, hat brim attach, bag handle anchor reinforcement, and welted motorcycle seat cushions.
- What is a cylinder-bed sewing machine used for?
- A cylinder-bed machine puts the throat plate on top of a horizontal arm extending out from the body, so a closed tube slips over the arm like a sleeve over a forearm. It's the answer for tubular work the operator rotates around a horizontal axis — boot shafts, saddle skirts, drum cushions and tubular bag bodies, and sleeve hems on a cylinder-arm coverstitch.
- Post bed or cylinder bed — which do I need?
- Hold the assembled piece and look at where the seam runs. If the seam line is horizontal and you'd rotate the work around an axis lying flat, that's cylinder-bed work (boot shafts, sleeves, drum bodies, tubular bags). If the seam line is vertical or wraps a vertical curve, that's post-bed work (shoe uppers, hat brims, bag handle anchors, tall ottomans). For shops spec'ing just one: footwear or hats, post bed first; boot shafts, saddle skirts, or apparel sleeve hemming, cylinder bed first.
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