79-03 Taber® Stiffness Testers
INTRODUCTION
Precision instrument evaluates material stiffness
The Analog Stiffness Tester utilizes a two directional pendulum-
type weighing system to evaluate material stiffness, flexural strength, resiliency and elasticity properties. The Analog Stiffness Tester provides accurate test measurements
to +/- 1.0% in stiffness and resiliency evaluation in thicknesses from 0.004 in. to 0.219 in. Force is applied to the lower end of the specimen by a pair of rollers attached to the driving disc. The resulting torque tilts the pendulum from its vertical position and a Taber Stiffness Unit reading (g•cm) is taken when the pendulum mark aligns with the appropriate driving disc mark (71/2° or 15°). Predetermined sample length, deflection angle and rate of loading provide accurate and reproducible test results.
The Analog Stiffness Tester is a manually operated instrument. Offering the same accurate, precision test results as the Digital Stiffness Tester, this instrument requires the user to record stiffness testing data, average the readings and multiply results by a scaling factor. Mounted on telescoping tripod legs, the Analog Stiffness Tester is lightweight for easy portability. Electronic components are sealed in a rugged housing.
APPLICATIONS
Paper, Cardboard, Plastic, Metals, Fabric, Felt, Leather, Rubber, Wire, Tubing and other Sheet Materials
Models Available
Taber Stiffness testers are available in two models. Both units offer bi-directional pendulum type testing in a range from 0-10,000 Taber Stiffness Units.
Features
- Factory calibrated to accuracy of ±1% full scale
- Telescoping, tripod base
- Ratchet stop roller
- Constant speed motor
- Dynamic brake holds pendulum at the deflection
- Range weights to test most products
Established tester offers durable construction
Based on the original Taber Stiffness Tester, Model 150-B offers telescoping tripod legs which make this instrument lightweight and portable. Operated manually by an lever control switch, a robust housing protects the electrical components. The new ratchet stop roller significantly reduces specimen mounting variability.
Test a wide range of products
Nine distinct ranges permit testing of materials that are extremely lightweight and flexible (such as cellophane or thin metallic foils) to items that are very rigid (such as plastics). Taber Stiffness Testers will evaluate paper, foil, light metallic sheet, laminated plastic, cardboard, wire, and other flexible materials up to 5.5 mm (0.219 inches) thick that do not exceed 10,000 Taber Stiffness Units.
TEST METHODS
Test procedures for the Taber Stiffness Tester have been established by a number of organizations. The following is a partial listing.
| Organization | Standard No. | Method | ||
| Appita | P 431 rp-73 | Stiffness of Paper and Paperboard | ||
| ASTM | D 5342 | Test Method for Resistance to Bend, Paper and Paperboard (Taber-Type Tester) | ||
| ASTM | D 5650 | Resistance to Bending of Paper of Low Bending Stiffness (Taber-Type Tester) | ||
| CPPS | D28P | Stiffness of Paper and Paperboard (Taber Method) | ||
| ISO | 2493 | Paper and Board - Determination of Resistance to Bending | ||
| JIS | P8125 | Testing Method for Stiffness of Paperboard by Bending Load | ||
| SAA AS | 1301.431RP | Methods of Test for Pulp and Paper - Taber Bending Resistance of Paper and Paperboard | ||
| TAPPI | T489 os-92 | Stiffness of Paperboard | ||
| TAPPI | T566 om-97 | Bending Resistance (stiffness) of Paper (Taber Type Tester in 0–10 Taber Stiffness Unit Configuration) | ||
| UNE | 57-075-74 | Determination of Stiffness of Paper and Board, Static Bending Method (Spanish) | ||
| ZZ | M-71D | Matting, Rubber, and Vinyl |
Stiffness Tester Includes:
Compensator Range Weight
Range Weight (500, 1000 and 2000 units)
Range Weight Case
Calibration Specimen
Optional Accessories (sold separately)
- Triple Cut Specimen Shear- Catalog number 79-03-01
- Auxiliary Range Weight Set (3000 and 5000 units) Catalog number 79-03-02
- High Sensitivity Attachment Catalog number 79-03-04
- Calibration Specimens
- Wire / Tube Testing Apparatus
- Step-Down Transformer (required for 220V operation)
INSTRUMENT SIZE
| Digital | Analog | |||
| Depth: | 394 mm (15-1/2 in.) | 254 mm (10 in.) | ||
| Height: | 381 mm (15 in.) | 419 mm (16-1/2 in.) | ||
| Width: | 254 mm (10 in.) | 222 mm (8-3/4 in.) | ||
| Weight: | 11.3 kg. (25 lb.) | 5.9 kg. (13 lb.) |
ORDERING INFORMATION
Digital Stiffness Tester - Catalog Number 79-05-00
Analog Stiffness Tester - Catalog Number 79-03-00
Call Us Today
For additional information on TMI Products and Services, or to learn how Testing Machines can help your company profit through testing, please call us at 1-800-678-3221, or e-mail info@testingmachines.com.
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Optional Accessories:
Taber Digital Stiffness Testers
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Click here to request a copy or call 631-439-5400 or 1-800-678-3221 (from with U.S. and Canada).
The TMI Guide to Pulp and
Paper Testing:
Click here for the TMI Guide to Pulp and Paper Testing in PDF format.
