pod rrmoore rev7 0210

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The R. R. Moore, recognized as the standard for rotating beam fatigue

testing, has been serving the industry faithfully for more than 75 years.

Over that time the system, which features a rugged cast aluminum frame

and heavy duty bearing housings, has demonstrated unsurpassed quality

in machine design.

Theo ry of OperationBased on the rotating beam principle, the specimen functions as a

simple beam, symmetrically loaded at two points. When rotated one half

revolution, the stresses in the fibers originally below the neutral axis are

reversed from tension to compression and vice versa. Upon completing

the revolution, the stresses are again reversed so that during one

revolution the test specimen passes through a complete cycle of

flexural stress (tension and compression).

Features• Standard machine operates at an adjustable speed of 500 to

10,000 RPM. Speed stability is ±2% of setpoint assuming a constant

line voltage. Speed will change proportionally to line voltage. A voltage

stabilizer is available as an option to minimize brief voltage fluctuations.

• At the nominal rate of 10,000 RPM, the R. R. Moore completes

600,000 cycles per hour (14,400,000 cycles per day).

• Integrated variable speed control provides the machine capability

to operate at speeds from 500 to 10,000 RPM. Speed control is

important in testing certain alloys that heat up when highly stressed.

It also allows certain correlations of results between high speed testsand previous lower speed tests.

• An easy-to-read digital cycle counter with magnetic pickup device

provides an accurate display of completed cycles in display increments

of 1 cycle per count up to 99,999,999 counts. Push button controls

are provided to reset the display count at the start of a test. Display

is equipped with a battery back-up so that count data is not lost in the

event of power failure.

• Interlocked clear Lexan test space enclosure prevents machine

operation until closed to prevent operator injury

• Conforms to DIN 50113 and ISO 1143 standards.

Spec ime n Loa d ing• The R. R. Moore machine can be equipped to test either straight shank

or tapered-end specimens. The standard specimen length is 3-7/16 in

(87.3 mm). Specimens approximately 1 in (25.4 mm) longer or shorter

can be used without affecting the calibration of the machine.

• Straight shank specimens are held in place using precision specimen

collets. Tapered-end specimens are machined to match the tapers within

spindles of the machine and held in place using threaded drawbars.

• To ensure precision, stress is applied to the specimen by direct

application of deadweights. Maximum fiber stress in a specimen having

a 0.300 in (7.62 mm) diameter is 75,000 psi (517 Mpa). By decreasing

the diameter, the value of the maximum fiber stress can be increased.

R.R. Moore Rota ting Beam Fatigue Testing Sys

www.instron.com



R.R. Moore | Rotat ing Beam Fat igue Testing System

Spec ifications

Instron is a registered trademark of Illinois Tool Works Inc. (ITW). Other names, logos, icons and marks identifying Instron products and services referenced herein are trademarks of ITW and may not be used without

the prior written permission of ITW. Other product and company names listed are trademarks or trade names of their respective companies. Copyright © 2010 Illinois Tool Works Inc. All rights reserved. All of the

specifications shown in this document are subject to change without notice.

POD_RRMoore_rev7

www.instron.c

Worldwide Headquarters

825 University Ave, Norwood, MA 02062-2643, USA

Tel: +1 800 564 8378 or +1 781 575 5000

European Headquarters

Coronation Road, High Wycombe, Bucks HP12 3SY, UK

Tel: +44 1494 464646

Instron Industrial Products

900 Liberty Street, Grove City, PA 16127,

Tel: +1 724 458 9610

RRM-A1 RRM-A2

Bending Moment Capacityin-lb 20 - 200 -

kg-cm - 25 - 230

Capacity Incrementsin-lb 0.2 -

kg-cm - 0.254

Rotational Speed¹ RPM 500 - 10,000 500 - 10,000

Load Weight Set²

lb

(8) 10, (1) 5,

(2) 2, (1) 1,(1) 0.5, (2) 0.2,

(1) 0.1

-

kg -

(7) 5, (2) 2,

(1) 1, (1) 0.5,

(1) 0.2, (2) 0.1,

(2) 0.05

Mimimum Effective Weight³lb 10 -

kg - 5

Machine Weight4lb 90 90

kg 41 41

Shipping Weight5lb 240 240

kg 110 110

Nominal Shipping Dimensions5

(h × d × w)

in 39 × 13 × 20 39 × 13 × 20

mm 990 × 330 × 510 990 × 330 × 510

Power Requirement6V 100 -120 100 - 120

Hz 50/60 50/60

Optional Accessories

Notes:

1. Speed regulation accuracy ±2%

2. Includes open-end wrench and allen wrenches for machine operation

3. Of yoke and weight pan

4. Does not include loading weights

5. Does not include optional stand (RRM-D1) but does include standard weight set

6. Transformer can be optionally supplied to step down 200 V to 240 V power

Notes:

1. A minimum of one set of specimen collets must be ordered with the RRM-C1 option to have a complete functional system.

2. When sold with the equipment stand (RRM-D1), shipping dimensions for the R. R. Moore system are 52.5 × 43.5 × 55 in (1335 × 1105 × 1400 mm)

and shipping weight is 218 kgs (480 lbs).

RRM-B1A Standard 100-120 V Single Phase 50/60 Hz Operating Voltage (Optional 240 Volt and Conditioning Transformers Available)

RRM- C1 Set of two drawbars providing machine with the capability to accept the spring type couplings, which are used when testing straight shank specimen

RRM-C1A Set of two precision collets for 0.240 in (6.1 mm) diameter straight shank specimens

RRM-C1B Set of two precision collets for 0.300 in (7.62 mm) diameter straight shank specimens

RRM-C1C Set of two precision collets for 0.365 in (9.27 mm) diameter straight shank specimens

RRM-C1D Set of two precision collets for 0.370 in (9.4 mm) diameter straight shank specimens

RRM-C2

Accessory set for tapered end specimens. Set includes:

• Set of two drawbars for tapered-end specimens

• Specimen extractor bolt

• Ring gauge for verification of proper specimen preparation

• Tapered end alignment verification specimen

RRM-D1 Specially designed equipment stand measures 36 × 24 × 36 in (915 × 610 × 915 mm) Includes leveling feet with vibration isolators.²

RRM-FUR Furnace system for R. R. Moore machine

Maximum Diameter:

0.3 in (7.62 mm)

Radius: 3.5 to 10 in

(88.9 to 254 mm)

0.481 in

(12.217 m

3.4375 in

(87.312 mm)

Relief:

0.01 in

(0.254 mm)

Taper:

0.625 in/ft

(52 mm/m)

Fillet

Radius: 3.5 to 10 in (88.9 to 254 mm)

Maximum Diameter:

0.3 in (7.62 mm)

Diameter:

See RRM-C

Collet Sele

0.75 in

(19.05 mm)3.4375 in

(87.312 mm)

0.75 in

(19.05 mm)

Straight shank specimen

Tapered-end specimen

pod rrmoore rev7 0210

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