MTS Series 322 Test Systems
A versatile T-slot load unit designed to meet your testing needs today and tomorrow

T H E MTS SER IES 322 TEST SYSTEM HAS T HRE E BASIC MODE LS
O F IN CREASI N G CAPA CI TY AND ST IFFNE SS. AFT E R CHOOSINGY O U R BASI C MO D EL, YOU C AN SP E CIFY T HE ACT UAT OR, FORCET R A N SDU CER, AN D SERVO VALVE COMBINAT ION, AS W E LL AST H E PLATEN DI M EN SI O N S AND COLUMN HE IGHT NE E DE D T O
M E E T YOU R TESTI N G N EED S.

2

The 322 Advantages»»

Versatile»

A Second Load Train Position»

Highly Configurable

The T-slot platen gives you a workbench for

Two load train mounting positions put the actuator

The 322 family has three basic models of increasing

mounting and testing everything from a small

and crosshead assembly where you need it. Thecapacity and stiffness. After choosing your basic

material specimen to a large automotive

standard mount­ing position centers the load trainmodel, you can specify the actuator, force transducer,

subassembly.

on the platen. The optional position puts the loadand servovalve combination, as well as the platen

train at the end of the platen.

dimensions and column height needed to meet yourMultiple Actuator Positions
Multiple actuator mounting positions put the»testing needs.

Hydraulic Lifts And Locks To Increase

actuator where you need it. You can order yourYour Productivity

test system with a platen or crosshead mounted

Optional hydraulic lifts let you smoothly reposition

The Series 322 test system comes with legs that

actuator—or even with a swivel mounted actuatorthe crosshead without using an overhead crane.

put its platen at a convenient working height.

hung from the crosshead. Mount an additional,

Optional hydraulic locks quickly unlock and lock

The weight is well distributed so most systems

horizontal actuator with reaction brackets andthe crosshead.

can be installed without special foundations

you can run biaxial tests.

»Freestandingor reinforcing your laboratory floor. The Series
322 system rests on isolation pads to give you aquieter work area.

*Hydraulic lifts and locks – speed
moving and locking the crosshead.

Design Features*Superbolt® style preloader – lets you fully
preload the force transducer with hand tools.
Columns – solid for high stiffness and heavily
chrome plated for long life and easy cleaning.

Crosshead – aluminum for a high natural
frequency, stiff for precise test measurement.

*Series 661.xx force transducer – accurate
for both static and dynamic testing, with a low
profile for more working room. Many force ratings
available to match your test needs.
T-slot platen – your workbench for mounting
small specimens and large assemblies.

*Control module – puts control of thehydraulic locks and lifts right at hand.

Series 244.xx Actuator – combines compact size,
high sideload tolerance, and durability. Manydifferent force and displacement ratings available.
Series 25x.xx Servovalve – a choice of highresponse models matched to your test needs.
*Series 111 Acumulators – close
coupled for superior actuator response.
Isolator pads – dampen operating noises.

3

Load Train Position Options

Center mounted(platen - top view)

End mounted

4Platen mounted

Swivel mounted

Crosshead mounted

5Basic Specificationabcedf6* All specifications subject to change without notice. Contact MTS to verify critical specifications.

Fatigue Ratings, Dimensions, and Weights — U.S. Customary
Model 322.21

Model 322.31

Model 322.41

22 kip55 kip110 kip

load unit fatigue ratingamaximum specimen/grip clearance

50.0 in

62.0 in

81.0 inbwidth between columns

21.0 in25.0 in30.0 incheight — with standard columns2

98 in

118.5 in

144.75 indtable height33.0 in

34.0 in38.7 inetable width — side-to-side, without lifts

28.0 in

34.0 in

42.0 in

34.0 in

40.0 in48.0 in

40.0 in

40.0 in

60.0 in

34.0 in

40.0 in48.0 inModel 322.31

Model 322.41

f1

width — side-to-side, with lifts

3

depth — front-to-back (not shown)3
width

4

Fatigue Ratings, Dimensions, and Weights — Metric
Model 322.21
load unit fatigue rating

100 kN

250 kN

500 kNamaximum specimen/grip clearance1

1270 mm

1575 mm

2057 mmb

width between columns
2cheight — with standard columns

dtable heightetable width — side-to-side, without lifts

f533 mm

635 mm

762 mm2489 mm3010 mm3677 mm

838 mm

864 mm

984 mm

711 mm

864 mm1067 mm

864 mm1016 mm

1219 mmdepth — front-to-back (not shown)31000 mm

1000 mm1500 mmwidth41370 kg

2050 kg

3870 kgwidth — side-to-side, with lifts

3

1 With a standard Series 661 Force Transducer and a fully retracted 6 in (150 mm) displacement actuator.
2 With a table mounted actuator.
3 On standard length tables.The Control Module’s position can increase the table’s width and depth.
4 Typical maximum weight with hydraulic locks, hydraulic lifts, and a standard dimension platen. Does not include the weight of grips or other accessories.

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T-Slot And Platen Specifications

acbde

ANSI Standard B.5.1 T-Slot Dimension*
T-bolt size

abcde

332.21
322.310.75 in
1 in

0.81 in1.06 in1.21 in1.82 in

0.62 in1.00 in

0.59 in
0.82 in1.44 in1.82 in

322.411 in

1.06 in1.82 in1.00 in

0.82 in1.82 inDIN Standard 650 T-Slot Dimension*
T-bolt size

abcde

332.21
322.31

22 mm
28 mm

22 mm
28 mm

38 mm
48 mm

22 mm
28 mm

16 mm
20 mm

37 mm46 mm

322.41

28 mm

28 mm

48 mm

28 mm

20 mm

46 mm

* minimum tolerances

8dehfgacb

T-slot Platen Dimensions — U.S. Customaryab1cde2

fg

h332.21
322.3128.0 in
34.0 in

40.0 in
40.0 in14.0 in17.0 in20.0 in20.0 in

5.0 in6.0 in9.0 in10.0 in

4.0 in5.0 in5.0 in5.0 in322.4142.0 in

60.0 in21.0 in30.0 in12.0 in12.0 in

7.0 in5.0 inT-slot Table Dimensions — Metricab1cde2

fgh

332.21
322.31

711 mm
864 mm1000 mm1000 mm355.6 mm
431.8 mm508.0 mm508.0 mm127.0 mm
152.4 mm

228.6 mm254.0 mm101.6 mm127.0 mm127.0 mm127.0 mm322.411067 mm1500 mm

533.4 mm762.0 mm

304.8 mm

304.8 mm

177.8 mm127.0 mm

1 larger tables available.
2 distance to optional second actuator mounting position.

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Stiffness Data

Deflections and Spring Rates
Deflections1

Model 322.21
22 kip/100 kN

Model 322.31
55 kip/250 kN

Model 322.41
110 kip/500 kN

base0.006 in

0.15 mm

0.007 in

0.18 mm

0.008 in

0.20 mma-bcolumns

0.004 in0.10 mm

0.006 in

0.20 mm

0.008 in

0.20 mmb-ccrosshead

0.005 in

0.13 mm

0.010 in

0.20 mm

0.010 in0.25 mmc-doverall frame

0.015 in

0.38 mm

0.021 in

0.53 mm0.026 in

0.66 mma-d

1.5 x 106 lb/in
2.6 x 108 N/mspring rates1

2.6 x 106 lb/in
4.6 x 108 N/m

4.2 x 106 lb/in
4.2 x 106 lb/in

1 Determined at each Load Unit’s full fatigue rating with its crosshead raised 50 in (1270 mm) above the T-slot table.
Deflection rates can vary 20%, depending on the type of actuator and force transducer you use.
For the most accurate high frequency test results, use a Load Unit with a fatigue rating that’s larger than its actuator’s force rating.
(A 322.31 Load Unit with a 55 kip fatigue rating and a 22 kip actuator will be stiffer than a 322.21 Load Unit with a 22 kip fatigue rating and 22 kip actuator.)

10cdbaFree column length (cm)
2550

125

250

2090

1045

5322.41

222322.31

9

Maximum side load limits (kN)Maximum side load limits (kips)

104.5

1322.2120.55102050100

Free column length (in)11

Regional Business Centers

T HE AM E R IC AS

EU R O PE

A S I A / PA C I FI CMTS Systems Corporation
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Toll Free: 800-328-2255
E-mail: info@mts.com
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Business Center,
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Telephone: +021-24151000
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India
Telephone: + 91 80 46254100
Email: mts.india@mts.com

MTS Systems Corporation
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Eden Prairie, MN 55344-2290 USA

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030-001-808c 322TestSystem • Printed in U.S.A. • 08/23