Quick answer: Stay with a handheld bag closer (NP-7A, Model S or Model F) if you close lower volumes, roughly 4–8 bags per minute, or need to close bags in different spots. Move to a pedestal sewing head on a conveyor (Model 100 or Empress Model 101, 35–55 ft/min) when handheld closing becomes the bottleneck, operators are worn out, or you want bags to flow from filler to closer to pallet. Pedestal heads also sew a more secure two-thread Type 401 stitch.
Most operations start with a handheld closer. At some point, a line outgrows it. Here's how to tell when, what a pedestal station involves, and how to estimate the capacity you'll gain.
Handheld vs. pedestal at a glance
| Handheld closers | Pedestal sewing heads | |
|---|---|---|
| Models | NP-7A, Model S, Model F | Model 100, Empress Model 101 |
| How it works | Operator carries the closer to the bag | Bags ride a conveyor past a fixed head |
| Throughput | Roughly 4–8 bags/min for portable models | 35–55 ft/min (Model 100 up to 80) |
| Stitch | Single-thread (NP-7A, Model F) | Two-thread Federal Type 401 |
| Utilities | AC outlet (NP-7A also 12V/24V DC); no air listed | Model 100: 120 VAC + 50 PSI, 2–3 CFM. Model 101: 90 PSI, 10–12 SCFM |
| Setup | Plug in and go | Pedestal, conveyor and accessories |
| Cost | Lowest | Higher: head plus pedestal and conveyor |
Signs you've outgrown a handheld closer
- Filled bags pile up waiting to be closed
- You've added a second person just to sew bags
- Stitch quality drops late in a shift
- You want bags to move straight from filler to closer to pallet on a conveyor
- You need a more secure two-thread seam, or a crepe tape closure on every bag
Estimate your capacity
For a pedestal head on a conveyor:
Bags per minute ≈ (conveyor speed in ft/min × 12) ÷ (bag width + gap between bags, in inches)
Example: at 45 ft/min with 18" wide bags and a 12" gap, that's 540 ÷ 30 = about 18 bags per minute. Compare that with roughly 4–8 bags per minute for portable models. In practice, your filler or bagging scale often sets the pace, so match the closer to what your filler can deliver.
What a pedestal sewing station includes
- Sewing head: Model 100 for plain sewing, or Model 101 for crepe tape
- Mounting pedestal: sold separately for the Model 100
- Conveyor to carry bags past the head
- Optional: power infeed systems, bag-top folders, thread and tape-break detectors, and photoelectric controls (Model 101)
- Utilities: 120 VAC and 50 PSI air at 2–3 CFM (Model 100), or 90 PSI at 10–12 SCFM (Model 101)
Keep a handheld as backup
It's worth keeping a handheld closer after you upgrade, for rework, odd bag sizes or closing bags away from the main line. The NP-7A is an affordable backup, and the Model F handles a wide mix of bag types.
Beyond sewing
If your product is a fine powder that sifts through stitching, a sewing head may not be the right upgrade at all. Pinch bottom paper bags on a PBC 6000 give a sealed, sift-resistant closure with no needle holes.
Frequently asked questions
What is the difference between a handheld and a pedestal bag sewer?
A handheld bag sewer is carried to the bag and run across the top by an operator. Portable models suit lower volumes of roughly 4–8 bags per minute. A pedestal sewing head mounts over a conveyor, and bags sew closed as they pass. Our Model 100 and Empress Model 101 pedestal heads run 35–55 feet per minute.
How many bags per minute can a pedestal sewing head close?
It depends on belt speed, bag width and the gap between bags. Bags per minute is roughly (feet per minute × 12) ÷ (bag width + gap, in inches). For example, at 45 feet per minute with 18-inch bags and a 12-inch gap, that's about 18 bags per minute. Your filler often sets the real pace.
When should I upgrade from a handheld bag closer?
Upgrade when handheld closing can't keep up with your filler, when operator fatigue or inconsistent stitching becomes a problem, or when you want bags to move on a conveyor from filling to closing to palletizing.
What do I need to install a pedestal sewing head?
You need a mounting pedestal (sold separately for the Model 100), a conveyor, and the right utilities: the Model 100 uses 120 VAC and air at 50 PSI and 2–3 CFM, and the Empress Model 101 needs air at 90 PSI minimum and 10–12 SCFM. Accessories include power infeed systems, bag-top folders, and thread and tape-break detectors.
Do handheld bag closers need compressed air?
Our handheld closers, the NP-7A, Model S and Model F, don't list an air requirement. The NP-7A runs on AC or 12V/24V DC, and the Model F runs on 115V or 230V.
Is a pedestal sewing head more secure than a handheld closer?
Our pedestal heads sew a two-thread Federal Type 401 double-locked chain stitch, which is harder to unravel than the single-thread chain stitch sewn by handheld closers like the NP-7A and Model F.
Ready to size a sewing station?
Tell us your bag material, product and how many bags you close a day, and we'll recommend the right closer. Call 866-888-6327 (Mon–Fri, 8am–5pm CST), email sales@clevelandequipment.com, or browse all bag sewers.