Quick couplers · S-System (Scandinavian)
QC-S - S-System Scandinavian quick-coupler
S-System Symmetrical Scandinavian quick-couplers
- 0.5–34 tons
- On request
S-System reversible Scandinavian quick-couplers built to the Nordic S standard, in fully hydraulic automatic, mechanically operated semi-automatic and hydraulic tilt/swivel versions. The range runs from QC-S30 for 0.5–2 t carriers to QC-S80 for 30–34 t machines, and the tilt/swivel QC-U-S models add 2 × 90° of hydraulic movement.
About this family
Hydraulic, fully automatic excavator quick coupler compatible with S Nordic system. Designed and built to EN 474-5 & ISO 13031:2023. Rear mechanical safety lock + hydraulic safety feature with pilot operated check valve. Visual indicator of engagement included.
Our S-System quick-couplers are mechanically operated and semi-automatic. They are simple to use and let you change attachments quickly and safely, with little time lost.
Built to EN 474-5 and ISO 13031:2023: double profiled front hook, rear mechanical safety lock, a pilot operated check valve as a second hydraulic lock, and a visual indicator of engagement. Optional lifting hook. Dimensions, carrier class and mass for every model are printed in the table below, straight from the 2025 Quick-Coupler-Systems catalogue.
Feature highlights
- Automatic, semi-automatic (manual open), and swiveling versions available
- Quick-hitches made according to Nordic S standard
- Reversible
- Safety features (double profiled front hook, visual indicator of engagement, rear mechanical lock)
- Lightweight & robust construction
- Optional lifting hook
Automatic: hydraulically operated fully automatic S-System quick-couplers. Key highlights:
- Fully Hydraulic: Automatic, no manual effort.
- Durable: made for work in hard site conditions.
- Safe: Advanced safety features to prevent accidental releases (double profiled front hook, visual indicator of engagement, mechanical safety lock)
- Low Maintenance: Easy upkeep for continuous operation.
- Most widely adopted in Nordic & Scandinavian countries
Manual: manually operated semi-automatic S-System quick-couplers. Key features include:
- Semi-Automatic Mechanism: Quick, manual engagement for fast changes.
- Rugged Design: made for work in hard site conditions.
- Safety indicator: operator can see when coupler is engaged
- Easy Installation: Simple setup for immediate use.
Tilt/Swivel: hydraulic-tilting quick-coupler fully automatic or semi-automatic S-System. Key features include:
- Full Mobility: Tilts and swivels the attachment into its working position.
- Hydraulic Operation: Smooth action both ways 2x90 degrees total 180 degrees
- Durable Construction: made for work in hard site conditions.
- Safety: A double profiled front hook, a rear mechanical lock and a visual indicator of engagement hold the attachment.
Dimensions
Dimensions in mm Dimensions in mm Dimensions in mm
Models and specifications
Figures as printed on this family’s datasheet. A dash means the datasheet does not state that figure.
Datasheet (PDF)| Model | Operation | Machine class [t] | A [mm] | B [mm] | C [mm] | D [mm] | E [mm] | F [mm] | Weight [kg] | Tilt size | Holding torque [Nm] | Working pressure [bar] | Tilt angle [°] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| QC-S30-H/150 | Automatic | 0.5 - 2 | 200 | 148 | 30 | – | – | – | 15 | – | – | – | – |
| QC-S30-H/180 | Automatic | 0.5 - 2 | 230 | 178 | 30 | – | – | – | 16 | – | – | – | – |
| QC-S40-H | Automatic | 2-6 | 300 | 198 | 40 | – | – | – | 30 | – | – | – | – |
| QC-S40-H/240 | Automatic | 2-6 | 300 | 238 | 40 | – | – | – | 32 | – | – | – | – |
| QC-S45-H | Automatic | 5 - 12 | 430 | 288 | 45 | – | – | – | 70 | – | – | – | – |
| QC-S50 | Automatic / Manual | 5 - 12 | 430 | 268 | 50 | – | – | – | 90 | – | – | – | – |
| QC-S60 | Automatic / Manual | 12 - 20 | 480 | 338 | 60 | – | – | – | 115 | – | – | – | – |
| QC-S70 | Automatic / Manual | 18 - 33 | 600 | 448 | 70 | – | – | – | 270 | – | – | – | – |
| QC-S80 | Automatic / Manual | 30 - 34 | 670 | 588 | 80 | – | – | – | 350 | – | – | – | – |
| QC-S30-SA/150 | Manual | 0.5 - 2 | 200 | 148 | 30 | – | – | – | 15 | – | – | – | – |
| QC-S30-SA/180 | Manual | 0.5 - 2 | 230 | 178 | 30 | – | – | – | 16 | – | – | – | – |
| QC-S40-SA | Manual | 2-6 | 300 | 198 | 40 | – | – | – | 30 | – | – | – | – |
| QC-S40-SA/240 | Manual | 2-6 | 300 | 238 | 40 | – | – | – | 32 | – | – | – | – |
| QC-S45-SA | Manual | 5 - 12 | 430 | 288 | 45 | – | – | – | 70 | – | – | – | – |
| QC-U-S30-H/150 | Tilt / swivel | 0.5 - 2 | 200 | 148 | 30 | 280 | 215 | 317 | 41 | 100 | 2.4 | 210 | 180 |
| QC-U-S30-H/180 | Tilt / swivel | 0.5 - 2 | 230 | 178 | 30 | 280 | 258 | 365 | 42 | 100 | 2.4 | 210 | 180 |
| QC-U-S40-H | Tilt / swivel | 2-6 | 300 | 198 | 40 | 370 | 287 | 475 | 90 | 125 | 8.2 | 210 | 180 |
| QC-U-S40-H/240 | Tilt / swivel | 2-6 | 300 | 238 | 40 | 370 | 345 | 475 | 92 | 125 | 8.2 | 210 | 180 |
| QC-U-S45-H | Tilt / swivel | 5 - 12 | 430 | 288 | 45 | 420 | 417 | 682 | 212 | 200 | 24.0 | 210 | 180 |
| QC-U-S50 | Tilt / swivel | 5 - 12 | 430 | 268 | 50 | 460 | 388 | 682 | 232 | 200 | 24.0 | 210 | 180 |
| QC-U-S60 | Tilt / swivel | 12 - 20 | 480 | 338 | 60 | 550 | 490 | 760 | 317/351 | 250 | 40.0 | 250 | 100/140 |
| QC-U-S70 | Tilt / swivel | 18 - 33 | 600 | 448 | 70 | 650 | 650 | 950 | 635/692 | 290 | 80.0 | 250 | 100/140 |
| QC-U-S80 | Tilt / swivel | 30 - 34 | 670 | 588 | 80 | 740 | 852 | 1060 | 715/772 | 290 | 80.0 | 250 | 100/140 |
→ Scroll the table sideways to see every model.
Sieruta-held certifications
- EN ISO 3834-2Certified welding qualityCSW/1293/2025
- EN 1090-1 EXC1 + EXC2Factory production control1433-CPR-0257
- EN ISO 9606-1 · WPQR EN ISO 15614Qualified welders and procedures
- EN ISO 9712: VT + PT level 2Non-destructive testing
- EN 10204 3.1Material traceability
- CE: 2006/42/ECCE markingTransition to Regulation (EU) 2023/1230 underway. Applicable from 20 January 2027.
Option: wear parts made from Hardox on request. We are a member of SSAB's Hardox In My Body programme.
Warranty
Sieruta covers manufacturing defects for original manufactured components.
Carbon transparency data is available for this product family.
View CE declarationQuick couplers
Request a quote
Parametric configurator + engineering review. Reply usually within 24–48 hours.