Item 280630.N: Siegmund Professional Screw Clamp 45°/90°, nitrided, for System 28 welding tables with Ø28 mm bores. It rotates infinitely from 0° to 360°, so Siegmund says it replaces separate 45° and 90° screw clamps; it clamps with up to 5 kN and its force can be set with a torque wrench. BTH Sales is the exclusive Canadian importer of Siegmund.
Specifications
| Siegmund article | 280630.N (siegmund.com) |
|---|---|
| System | Siegmund System 28 (Ø28 mm bores, 100 mm grid) |
| Height | 310 mm (12.20 in) |
| Weight | 2.84 kg (6.26 lb) |
| Max. clamping force | 5 kN (≈ 1,124 lbf) |
| Finish | Nitrided |
| Rotation | Infinitely variable, 0° to 360° |
| Spindle | Ball diameter 16 mm, trapezoid thread 20 x 4 mm |
| Flat bar | 30 x 14 mm; vertical bar reinforced |
| Prism | Interchangeable |
| Force setting | Countersunk hexagon socket at the top of the handle, for a torque wrench |
| GTIN | 4251805923032 |
Compatibility
- Fits: Siegmund System 28 welding tables and tooling with Ø28 mm bores on a 100 mm grid. Siegmund System 28 accessories also fit other 28 mm system welding tables with Ø28 mm bores on a 100 mm grid. Compatible tables from other manufacturers are often made from different materials and to different standards, so quality varies by manufacturer, compared with Siegmund's X8.7 tool steel.
- Not compatible: System 16 (Ø16 mm) tables; Siegmund builds each system around one bore size.
- Works with: other Siegmund System 28 clamps, bolts, stops, squares and U-squares on the same table.
- Care & grounding: anti-spatter spray, CleanBasic cleaner, Ground Connection Comfort (S16/S28).
What's included
- 1 x Siegmund Professional Screw Clamp 45°/90° nitrided (280630.N)
Engineering support & demos
Engineering support comes with your purchase: fixture design, layout drawings, CAD and 3D models, site visits and cobot cell planning, handled by Travis Hardcastle at BTH Sales or by Siegmund directly. BTH Sales does not sell cobots; for cobot cells we help with table integration and fixturing (see cobot welding with Siegmund tables). Live demos at our St. Marys showroom are by appointment (book a demo), and we offer video demos if you are outside Ontario. BTH Sales is family-owned, founded in 2001, and has been the exclusive Canadian importer of Siegmund since 2018.
Typical uses
- Angled clamping without changing clamps: the clamp rotates from 0° to 360° and replaces conventional 45° or 90° screw clamps (Siegmund).
- Repeatable clamping force set with a torque wrench (Siegmund).
- Siegmund describes System 28 as ideal for light to heavy components and designed for maximum clamping forces, multi-ton structures and high distortion forces.
Industries served: Siegmund's published practical examples show its welding tables and tooling in these sectors: Agriculture; Interior; Lighting and electrical engineering; Machine tools and plant construction; Measurement and testing technology; Motorcycle engineering; Revolving door systems; Robotic technology; Stage technology; Stainless steel processing; Steel, sheet metal and metal construction; Textile production; Train Construction; Vehicle construction; Welding technology; Woodworking.
Frequently Asked Questions
Do I still need separate 45° and 90° clamps?
No. Siegmund says the Professional Screw Clamp 45°/90° replaces conventional 45° or 90° screw clamps because it can be rotated infinitely from 0° to 360°.
Can I set the clamping force precisely?
Yes. Siegmund says the countersunk hexagon socket at the top of the handle lets you adjust the force precisely with a torque wrench. Siegmund rates the clamp at 5 kN maximum clamping force.
Can I replace worn parts instead of buying a new clamp?
Yes. Siegmund sells the spare parts individually. Its parts list for this clamp is 280633.N, 280617.2, 280662.2, 289109.N.Set, 289108.N, 280634.2.N and 280657.1.N. Email sales@bthsales.ca with the part number you need.
Will it fit other 28 mm welding tables?
Yes, if the table has Ø28 mm bores on a 100 mm grid. Check the bore diameter and grid before ordering. Compatible tables from other manufacturers are often made from different materials and to different standards, so quality varies by manufacturer, compared with Siegmund's X8.7 tool steel.
Related parts
- System 28 Professional Screw Clamp (280610.N)
- System 28 Professional Screw Clamp XL (280612.N)
- System 28 vertical bars for 280630
- System 28 prism for screw clamps
- System 16 Professional Screw Clamp 45°/90°
- All Siegmund System 28 welding table clamps
Ships across Canada from 5 Industrial Rd, St. Marys, ON N4X 1G2, or pick up from our warehouse. Most orders ship within 48 hours. Email sales@bthsales.ca or call +1-519-461-1381 with questions or for a freight quote.
