Test winner Testsieger
Folder-Zwingen3.indd Folder-Zwingen.indd 1 1
12/4/2015 25.11.2015 4:06:33 10:38:54 PM
So sehen S
Winners look like this Einhandzwingen Easy undare Pro One-hand clamps Easy and Pro test winners at Selbst istbei derSelbst Mann ist der sind Testsieger
Mann
Wolfcraft EasyEasy and Pro Die Modelle und Pro models win the race - they von wolfcraft machten das clamp well, arespannen robust and Rennen – sie gut, easy to use. sind robust und einfach bedienbar. (Selbst ist ist der (Selbst der Mann, Mann,12/2015) 12/2015)
“Simple-to-use, solid build, „Einfach anzuwenden, very good clamping.” solide Bauweise, sehr gute Haltewerte.“
Folder-Zwingen3.indd Folder-Zwingen.indd 2 2
12/4/2015 25.11.2015 4:06:35 10:38:59 PM
n Sieger Winneraus of
„Einfach anzuwenden, solidevery Bauweise, “Simple-to-use, solid build, good gute Haltewerte, kompakte clamping, compact design.”Bauform.“
ACCESSORIES: This large Wolfcraft clamp offers these spacer bars which are indispensible in practice.
Folder-Zwingen3.indd Folder-Zwingen.indd 3 3
12/4/2015 25.11.2015 4:06:37 10:39:05 PM
KNOWLEDGE & TECHNOLOGY WISSEN & TECHNIK Brand
Model
Price (approx. incl. VAT)1 Weight (g) Specified clamping width (mm)
1
Clamping width / depth (max. in mm) Clamping jaw material Braces (yes/no, material) Retrofit as spreader clamp (yes/no) Features
Wolfcraft
Easy 3021 000
Wolfcraft
Pro 3031 000
Bessey
Stanley
Fatmax FMHTO-
EZS 45-8
13€
20€
29€
39€
542
1006
1044
1266
300
300
300/79
312/101 €
450
300
468/84
312/91
Plastic
Plastic
Plastic
Yes / soft plastic
Yes / soft plastic
Yes / soft plastic
Plastic Yes / soft plastic
Yes
Yes
Yes
Yes
Tools for retrofit required
Retrofit without tools
Retrofit without tools
Retrofit without tool
Partially imprinted
(Instructions attached
Subjective evaluation Calibration instructions (Attached card)
(Visual instructions on a card)
Ergonomics Clumsy Jaw parallelity Evaluated with/without load during clamping
Heavy, upper jaw accidentally rele
Heavy, upper jaw accidentally released
Manufacturing quality Spürbare Unsauberkeiten, Stabilität
Field testing One-hand clamping Difficult equal guiding Remove from workpiece Difficult to control
Difficult to control Fixing independently movable parts Manoevering difficult, as clumsy Analysis of holding force Clamping pressure generated (45 mm jaw separation, in Nm)
Manoevering difficult, as clums
2
570
755
995
stable clamping force
1185 Impact on release
Clamping round workpieces3 Not provided
Lengthwise and crosswise possible
Not provided
Danger of clamping
Jagged edges
Danger of clamping
Lengthwise and crossw
Analysis of clamping depth4
Lab / safety inspections Danger of injury when activating
Load test5 Heavy to use after test
Tensile test with 850 Nm at half clamping width Drop test6 Five times, afterwards check damage Labeling Design check
7
Rating Rating (price/performance)
SUMMARY: 1
Side clamp loosened
No
Side clamp loosened
No
Address missing
Address missing
Address missing
Address missing
OK Very good (1.4)
OK Good (1.5)
OK Good (1.7)
OK Good (1.9)
Very good
Good
Fair
Fair
Simple-to-use, solid build, very good clamping, compact design
Simple-to-use, solid build, very good value for money, but somewhat clumsy
Simple-to-use, solid build, very good value for money, but somewhat clumsy
Simple-to-use, solid b very good value for mon somewhat clumsy
Manufacturers details. 2Determined on test bench at a jaw separation of 450 mm, read out of clamping value 10 seconds after clamping, 3 Not possible for notched jaws or braces. 4Evaluated based on the values determined in the above table. 5Eva
Folder-Zwingen3.indd Folder-Zwingen.indd 4 4
12/4/2015 25.11.2015 4:06:38 10:39:11 PM
SCHNELLSPANNZWINGEN QUICK CLAMPS Stanley
x FMHTO-83239
Dünnemann
Meister
Lux Tools (Obi)
10€
23€
21€
Klemmsia 400/110 One-hand clamp Midi450
39€
501 314
Stanley
Silverline
Go On (Hagebau)
18€
13€
4€
Fatmax FMHTO 83233 Stable one-hand clamp
Quick clamp
592
554
602
334
1118
300
400
450
450
300
450
312 / 91
403 / 108
451 / 65
456 / 61
300 / 58
464 / 94
154 / 61
Wood
Plastic
Plastic
Plastic
Plastic
Plastic
Yes/ soft plastic
Yes/ plastic
Plastic
s / soft plastic
Yes / cork No
Yes
trofit without tools
tions attached)
(No manual)
aw accidentally released
Yes/ soft plastic
Yes/ soft plastic
ja/ soft plastic
542 150
Yes
Yes
Yes
Yes
Yes
No tools needed, can be retrofit, rotating clamping jaw
Retrofit without tools
Tools for retrofit required
Retrofit without tools
Retrofit without tools
(Attached card)
(No manual)
(Attached card)
(No manual)
Somewhat jagged edges
Release is difficult
Somewhat jagged edges
Handle shape awkward
Handle shape edges sharp
cult to control
Release is difficult
Jagged edges
Handle somewhat short
Only possible with practice
(No manual)
Handle shape awkward
schwer kontrollierbar
t, as clumsy
Jaws too smooth
1185 1185 on release
403
530 schwer zu lösen
d crosswise possible
Limited
Lengthwise and crosswise possible
anger of clamping
704 stabile Haltekraft
391 clearly loses clamping force
Lengthwise and crosswise possible
Lengthwise and crosswise possible
Somewhat jagged edges, clamping danger
Jagged edges, clamping danger
388
564
Impact on release Not provided
Not provided
Low danger of clamping
Danger of clamping
Release head sheared off
No
Visibly deforms upon overload
keineNo
No
Side clamp loosened
No
Side clamp loosened
Address missing
Address missing
OK
OK
Address missing
OKOK Good (1.9)
OK Good (2.1)
OK Good (2.2)
OK Good (2.3)
OK Good (2.4)
Very good
Good
Good
Good
Fair
o-use, solid build, alue for money, but ewhat clumsy
Simple-to-use, solid Simple-to-use, solid Einfach anzuwenden, solide Simple-to-use, solid build, build, medium value for Bauweise,gute Haltewerte, very good value for money, build, medium value for low clamping depth money money geringe Spanntiefe
OK
Address missing OK Fair (2.5) Good
OK Fair (2.5) Good
Sharp edgeed handle, solid build, moderate clamping
Sharp edgeed handle, solid build, moderate clamping
d in the above table. 5Evaluated based on tensile tests with a maximum 850 Nm. 6According to standard from 100cm drop height from different positions. 7 Other tests according to current standards or state-of-the-art.
Folder-Zwingen.indd 5 5 Folder-Zwingen3.indd
25.11.2015 4:06:39 10:39:20 PM 12/4/2015
KNOWLEDGE & TECHNOLOGY WISSEN & TECHNIK
FIELD TESTING
UNDER
PRESSURE Quick clamps are to be placed easily and make gluing work simpler. Ergonomics are often only adequate for these clamps
Photos: David Weimann, Claudio Kalex
TEXT PETER BARUSCHKE
Stable bonding iswerden done Stabilewood Holzverbindungen best with casein glue -hergestellt the am besten mit Weißleim bonds must be held just – die Verbindung mussfor dann knapp under half and hour, eine halbe Stunde langwhere aufeinanthe pressure is as derclamping gepresst werden, wobei der equally distributed along the Anpressdruck möglichst gleichworkpiece as possible. An mäßig auf das Werkstück verteilt ideal jobsollte. for quick clamps as werden Eine ideale Aufgabe they can be put in position für Schnellspannzwingen, denn with sufficient speed. Really? diese lassen sich in ausreichender Even handling, many of the Zahl in schnell in Position bringen. clamps tested showed clear Wirklich? Gerade in der Handhaweaknesses, clamps from Go bung zeigten viele der getesteten On, Lux Tools, Stanley and an Zwingen deutliche Schwächen, Work Plus are very sensitive den Spannwerkzeugen von Go On, toLux clamp. winners from Tools,Test Stanley und Work Plus the Easy fromempfindlich Wolfkraft kann manrange sich sogar show moreUmso positively how it klemmen. positiver konnte can be Testsieger done right: actiunser ausThe der Easyvating levers rounded with Baureihe von are Wolfcraft zeigen, wie convenient handles, theBetäticlamp man es richtig macht: Die can be precisely guided and gungshebel sind abgerundet und delicately with one griffgünstigclamped geformt, die Zwinge hand. Thisauch means the position lässt sich einhändig präzise offühren the parts to be fixed can be und feinfühlig zusammenfahwell-controlled ren. Somit kann and auch corrected die Position during Howwährend well the der zu clamping. fixierenden Teile clamps are broughtgut into podes Spannvorgangs kontrolliert sition depends sigificantly und korrigiert werden. Wie guton sich handle shapein –Position and from the die Zwingen bringen handle It is possible lassen,position: hängt wesentlich von der toForm handle Bessey der Griffe ab –and undWolfvon der craft from both Griffposition: Beiabove Besseyand beund low, for Lux Mesietervon Wolfcraft ist Tools, die Handhabung
Folder-Zwingen.indd 6 6 Folder-Zwingen3.indd
and the hand Bei must obenStanley und unten möglich, Lux grip from the und rail Stanley side. For Tools, Meister sollte optically similar clamps from die Hand von der Schienenseite Go Silverline and Work aus ON, zugreifen. Bei den optisch Plus access fromvon theGo fixed ähnlichen Zwingen On, jaw direction is more Silverline und Work Plus convenist ein ient. During positioning of the Zugriff aus Richtung der feststeclamping tool thengünstiger. the decision henden Spannbacke isBei made depending hander Positionierung on der the Spanndle shape,sollten whereSie it daher should be werkzeuge nach best placedder onGriffe the workpiece. der Bauform entscheiIn practice it is above all imden, wie die Zwingen am besten portant to apply a sufficiently amWerkstück ausgerichtet werden. high During In dersurface Praxis istpressure. vor allem wichtig, glueing with casein glue, a einen ausreichend hohen Flächenpressure of at least Newton druck aufzubringen. Bei0.2 Verleimunmetres per square gen mit Weißleim wirdmillimetre ein Druck isvon recommended this means wenigstens 0,2 – Newtonmetern an force of empfohlen 20 tons per proapplied Quadratmillimeter square metre! In order einer to apply – das entspricht immerhin this pressurevon on 20 a workpiece Gewichtskraft Tonnen pro of 50 x 70 centimetres (reQuadratmeter! Um diese Presskraft quired force: around ton), auf einem Werkstück vona 50 x 10 20 of the test winner zu clamps Zentimetern aufbringen können are required. Ourrund practical ex(nötige Presskraft: eine Tonample shows that the achievane), sind mit unserem Testsieger ble is an important alsoforce 20 Zwingen erforderlich.factor. Unser In this discipline expected, Praxisbeispiel zeigt,as dass die erzielthe volume clampsFaktor from barelarger Presskraft ein wichtiger Bessey andDisziplin Stanleysind have an ist. In dieser erwaradvantage, thevoluminös equally large tungsgemäß die gebaubuild products from Go On ten Zwingen von Bessey und Stanand Silverline however ley im Vorteil – die ebenfallsremain groß clearly below expectation. gebauten Produkte von Go On und
A higherbleiben clamping force can Silverline allerdings deutlich then den justify a higherzurück. purchase hinter Erwartungen Eine price: Haltekraft When using höhere kann Bessey dabei einen clampsKaufpreis for gluerechtfertigen: work only half höheren as Nutzung many clamps are required Bei der Bessey-Zwinge as withfürthe Wolfcraft Easy werden Verleimarbeiten nur halb model – this also savesbenötigt stress so viele Spannwerkzeuge of an timeEasy-Modell of only wie mit opening dem Wolfcraft fewspart minutes. On the –adas auch Stress bei other einer hand, force is not everything: Offenzeit von nur ein paar Minuten. For angledist workpieces it is an Andererseits Kraft nicht alles: advantage to handle smaller Bei verwinkelten Werkstücken ist clamps. Many of the tested es vorteilhaft, kleinere Zwingen zur clamps have Viele a high Hand zu haben. derclamping getesteforce immediately after appliten Zwingen zeigten zwar unmittelcation however reduces bar nach –dem Fixiereniteine hohe signifcantly seconds. The Haltekraft – dieafter sich jedoch schon effect affectsmerklich springyreduzierte. plastics nach Sekunden andEffekt impacts clamps Der beruhtsmaller auf zu elastisch from Stanley and Work Plus ausgelegten Kunststoffen und war theder most. Also important is bei kleinen Zwinge von Stanley the length theamclamping und bei Workof Plus stärksten.arm, becausewichtig for wider Ebenfalls ist dieworkpieces Länge der equal pressure distribution Spannarme, denn bei breiteren is only possible with Werkstücken kann nur sufficient mit weiter in fixing points alongFixierpunkten the surface. die Fläche reichenden In this discipline the claseine gleichmäßige Druckverteilung sic Klemmsia claims top erreicht werden. In dieser the Disziplin spot, only theKlassiker larger one-hand schiebt sich der Klemmclamps from Silverline, Stanley sia an die Spitze, nur die großen and Wolfcraftvon come close with Einhandzwingen Silverline, their 10 centimetre arm length. Stanley und Wolfcraft reichen an ihre gut 10 Zentimeter Armlänge heran.
25.11.2015 4:06:40 10:39:29 PM 12/4/2015
QUICK CLAMPS SCHNELLSPANNZWINGEN
Drop test study:
Part of the test matrix includes a drop test from a height of 80 centimetres. Only one clamp had a defect that could not be removed here.
SUMMARY: Wolfcraft Easy and Pro models win the race - they clamp well, are robust and easy to use. The classic Klemmsia from Dünnemann is our price recommendation.
A moment of ‘tension’:
When evaluating ergonomics, over and over sharp edges and the danger from clamping are criticized.
Folder-Zwingen3.indd Folder-Zwingen.indd 7 7
12/4/2015 25.11.2015 4:06:41 10:39:42 PM
Folder-Zwingen.indd 8 8 Folder-Zwingen3.indd
25.11.2015 4:06:41 10:39:43 PM 12/4/2015