Items 280740, 280740.1, 280740.2 and 280741: Siegmund Magnetic Clamping Bolt 68, 93 and 118 for System 28, plus the Spacer Ring. Siegmund says it clamps fast without bolting or tools, and suits pressure-sensitive parts such as thin sheet and housings where counter-holding is not possible. BTH Sales is the exclusive Canadian importer of Siegmund.
Specifications
| Siegmund article | 280740 (siegmund.com) | 280740.1 (siegmund.com) | 280740.2 (siegmund.com) | 280741 (siegmund.com) |
|---|---|---|---|---|
| Description | Magnetic Clamping Bolt 68 Aluminum | Magnetic Clamping Bolt 93 Aluminum | Magnetic Clamping Bolt 118 Aluminum | Spacer Ring for Magnetic Bolt burnished |
| System | Siegmund System 28 (Ø28 mm bores, 100 mm grid) | |||
| Length | 68 mm (2.68 in) | 93 mm (3.66 in) | 118 mm (4.65 in) | 25 mm (0.98 in) |
| Weight | 0.09 kg (0.20 lb) | 0.13 kg (0.29 lb) | 0.16 kg (0.35 lb) | 0.12 kg (0.26 lb) |
| Shaft length | 25 mm (0.98 in) | 50 mm (1.97 in) | 75 mm (2.95 in) | – |
| Finish | Aluminum | Aluminum | Aluminum | Burnished |
| GTIN | 4251805918014 | 4251805919837 | 4251805919844 | 4251805918021 |
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.
- Siegmund System 28: fits every System 28 Siegmund table, including the Professional Extreme 8.7 and 8.8 PLUS tables listed on bthsales.ca; Siegmund's page cross-references 280741.
- 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
Choose one option; each option is one piece:
- 1 x Siegmund Magnetic Clamping Bolt 68 Aluminum (280740)
- 1 x Siegmund Magnetic Clamping Bolt 93 Aluminum (280740.1)
- 1 x Siegmund Magnetic Clamping Bolt 118 Aluminum (280740.2)
- 1 x Siegmund Spacer Ring for Magnetic Bolt burnished (280741)
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
- Clamping thin sheet metal and other pressure-sensitive parts (Siegmund).
- Components where counter-holding is not possible, e.g. sheet metal housings closed all around (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
What is the magnetic clamping bolt for?
Siegmund says it enables fast clamping without bolting or tools, for pressure-sensitive parts like thin sheet metal and for components where counter-holding is not possible.
What does the spacer ring do?
Siegmund says the Spacer Ring (280741) is for applications that need space between two clamping elements; for example, it lets you use a long clamping bolt instead of a short one.
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
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.
