Quick couplers · S-System (Scandinavian)

QC-S - S-System Scandinavian quick-coupler

For machines of 0.5–70 t

Price & lead time Get price & lead time Download product sheet (PDF)

We usually reply within 1 working day
We check the fit before we send the quote
12 months warranty on manufacturing defects in the components Sieruta makes itself
Every offer names the dispatch week
If a bracket we made is wrong and does not fit your machine, we replace it.

Call +48 503 808 636 Message us on WhatsApp Photos and voice notes are welcome.

QC-S - S-System Scandinavian quick-coupler in the workshop, photo 1

QC-S
For machines of 0.5–70 t

Standard

S-System Symmetrical Scandinavian quick-couplers

The whole range: Excavator quick couplers

0.5–70 tons

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-S90 for 40–70 t machines, and the tilt/swivel QC-U-S models add hydraulic movement: 2 × 90° on QC-U-S30 to S50, 100/140° on QC-U-S60 to S80.

Which machine or coupler?

Models and specifications

Figures as printed on this family’s datasheet.

Datasheet (PDF)

Which bracket does your machine take? See the coupler fit reference
Looking for your machine by make and model? See the machine fit tables

Models of this family with the figures printed on its datasheet
Model	Operation	Machine class [t]	A [mm]	B [mm]	C [mm]	D [mm]	E [mm]	F [mm]	Weight [kg]	Tilt size	Holding torque [kNm]	Working pressure [bar]	Tilt angle [°]
QC-S30-H/150	Automatic	0.5–2	200	148	30	15	Price & lead time
QC-S30-H/180	Automatic	0.5–2	230	178	30	16	Price & lead time
QC-S40-H	Automatic	2–6	300	198	40	30	Price & lead time
QC-S40-H/240	Automatic	2–6	300	238	40	32	Price & lead time
QC-S45-H	Automatic	5–12	430	288	45	70	Price & lead time
QC-S50	Automatic / Manual	5–12	430	268	50	90	Price & lead time
QC-S60	Automatic / Manual	12–20	480	338	60	115	Price & lead time
QC-S70	Automatic / Manual	18–33	600	448	70	270	Price & lead time
QC-S80	Automatic / Manual	30–34	670	588	80	350	Price & lead time
QC-S90	Automatic	40–70	750	748	90	750	Price & lead time
QC-S30-SA/150	Manual	0.5–2	200	148	30	15	Price & lead time
QC-S30-SA/180	Manual	0.5–2	230	178	30	16	Price & lead time
QC-S40-SA	Manual	2–6	300	198	40	30	Price & lead time
QC-S40-SA/240	Manual	2–6	300	238	40	32	Price & lead time
QC-S45-SA	Manual	5–12	430	288	45	70	Price & lead time
QC-U-S30-H/150	Tilt / swivel	0.5–2	200	148	30	280	215	317	41	100	2.4	210	180	Price & lead time
QC-U-S30-H/180	Tilt / swivel	0.5–2	230	178	30	280	258	365	42	100	2.4	210	180	Price & lead time
QC-U-S40-H	Tilt / swivel	2–6	300	198	40	370	287	475	90	125	8.2	210	180	Price & lead time
QC-U-S40-H/240	Tilt / swivel	2–6	300	238	40	370	345	475	92	125	8.2	210	180	Price & lead time
QC-U-S45-H	Tilt / swivel	5–12	430	288	45	420	417	682	212	200	24.0	210	180	Price & lead time
QC-U-S50	Tilt / swivel	5–12	430	268	50	460	388	682	232	200	24.0	210	180	Price & lead time
QC-U-S60	Tilt / swivel	12–20	480	338	60	550	490	760	317/351	250	40.0	250	100/140	Price & lead time
QC-U-S70	Tilt / swivel	18–33	600	448	70	650	650	950	635/692	290	80.0	250	100/140	Price & lead time
QC-U-S80	Tilt / swivel	30–34	670	588	80	740	852	1,060	715/772	290	80.0	250	100/140	Price & lead time

→ Scroll the table sideways to see every model.

QC-S - S-System Scandinavian quick-coupler Price & lead time

Price & lead time Get price & lead time

Call us

+48 503 808 636

Welded to EN ISO 3834-2. Agree it as a standing term of supply and the EN 10204 3.1 certificate ships with every attachment. You also get the CE declaration of conformity for every quick coupler and hydraulic attachment. See the certificates.

Message us on WhatsApp Photos and voice notes are welcome.

Made in Poland
Spare parts and service
Delivery: EU, Norway, Switzerland, United Kingdom
Engineering support

Support in English

Enquiries, quotes and order correspondence in English
Delivered by road on request, with customs handling for the UK
Operating manuals and spare-parts lists in English
OEM manufacture since 2008
Spare and wear parts direct from our factory

Depending on the item, we build to stock or to order. We keep bucket shells and parts in stock to keep lead times short.

Request documents for a serial number

Features

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 construction
Optional lifting hook
Automatic: hydraulic S-System quick-couplers coupled and released from the cab
- Fully hydraulic: coupling and release are worked from the cab.
- Safety: a double profiled front hook, a visual indicator of engagement and a mechanical safety lock guard against accidental release
- The S standard is the coupler interface used in the Nordic countries
Manual: semi-automatic S-System quick-couplers engaged by hand
- Semi-automatic mechanism: the coupler is engaged by hand.
- Safety indicator: the operator can see when the coupler is engaged
Tilt/Swivel: S-System quick-coupler with 2 × 90° or 100/140° of movement by size, fully automatic or semi-automatic
- Movement: Tilts and swivels the attachment into its working position.
- Hydraulic operation: tilt angle by size. 2 × 90° both ways, 180° in total, on QC-U-S30 to S50; 100/140° on QC-U-S60 to S80
- All couplers (mechanical & hydraulic) available with tilt motor
- Hydraulic line routing: the hoses are kept out of the way of the work
- Safety: a double profiled front hook, a rear mechanical lock and a visual indicator of engagement hold the attachment.

About this family

Hydraulic, fully automatic excavator quick coupler compatible with S Nordic system. Designed and built to EN 474-5 and ISO 13031:2016/Amd 1:2025. Rear mechanical safety lock and a hydraulic safety feature with pilot operated check valve. Visual indicator of engagement included.

The manual S-System quick-coupler is mechanically operated and semi-automatic. It lets you change attachments quickly and safely, with little time lost.

Built to EN 474-5 and ISO 13031:2016/Amd 1:2025: double profiled front hook, rear mechanical safety lock, a pilot operated check valve as a second hydraulic lock, and a visual indicator of engagement. On the hydraulic versions the check valve keeps the lock closed if hydraulic pressure drops, so the attachment cannot come loose. Optional lifting hook. Dimensions, carrier class and mass for every model are in the table below, as printed in the Quick-Coupler-Systems catalogue.

Dimensions

Dimensions in mm
Dimensions in mm

Safety

Attachment not fully engaged: A visual indicator shows the operator whether the coupler has engaged.
Loss of hydraulic pressure: On hydraulic models, a pilot operated check valve works as a further hydraulic lock on the coupler.
Accidental release: The double profiled front hook holds the front pin of the attachment.
The rear mechanical safety lock keeps the coupler engaged.

Every quick coupler is tested before dispatch.

UK market: semi-automatic couplers are not supplied to the UK. Under an industry agreement with the HSE in force since 1 October 2008, UK buyers get the automatic or the manual version only. Confirm the version with our engineers when you ask for a quote.

Compliance, certification & documentation

EN ISO 3834-2 Certified welding quality CSW/1293/2025
EN 1090-1 EXC1 + EXC2 Factory production control 1433-CPR-0257
EN ISO 9606-1 · WPQR EN ISO 15614 Qualified welders and procedures
EN ISO 9712: VT + PT level 2 Non-destructive testing where the drawing or inspection plan requires it
EN 10204 3.1 Material traceability
CE: 2006/42/EC CE marking Transition to Regulation (EU) 2023/1230 underway. Applicable from 20 January 2027.

See the certificate details

Warranty

12 months warranty on manufacturing defects in the components Sieruta makes itself.

Normal wear, misuse or overloading and unauthorised modifications are not covered. Warranty terms and claims

Request the CE declaration for your serial number

Why buy from the factory

Cutting, machining, welding and painting on one site, our own factory in Poland, EU
More than 50,000 attachments delivered since 2008
A record for every serial number, so the spare parts match your attachment

Request a quote

Tell us your machine and the job. An engineer checks the fit, and we usually reply within 1 working day.

Price & lead time Get price & lead time