Rex Gauge Durometers
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Rex Gauge Durometers - Space Certified Technology

Model OS-AUTO Operating Stand

Model OS-AUTO Operating Stand
Product Code: OS-AUTO
Availability: 3 WEEK LEAD TIME
Price: $4,525.00
Qty:     - OR -  

 Automatic Operating Stands

The Model OS-AUTO Type 3 Automatic Operating Stand provides constant load, controlled rate of descent, and application velocity, through a geared electric motor and braking mechanism that alternately lowers the durometer onto the specimen and then raises it in preparation for the next test.

This OS-AUTO also provides an electronic timer that can adjust the amount of time the durometer remains in the lowered position (dwell time).

The durometer and carriage assembly have a mass sufficient for use with Types A, B and O. The incorporation of the large detachable mass is required for testing with Type C, D and DO durometers. The OS-AUTO can also be configured for use with durometer Types OO, OOO and OOO-S.

Adjustment of the durometer for specimen thickness is easily accomplished by a height adjusting knob on the top of the stand.

  • Gauge Sold Separately


  • Conforms To ASTM D2240 Type 3
  • Eliminates Operator Error
  • Motorized Controlled Rate of Descent
  • Consistent Load
  • Adjustable Dwell Time 
  • Precision Machined Frame and Black Powder Coated Base
  • Stainless Steel Housing for Durability and Ease of Maintenance
  • Precision Ground Shafts and Linear Bearings Provide Smooth Positive Motion
  • High Quality Electric Motor and Servos Provide Reliable Operation and Long Life
  • Removable Mass for Improved Accuracy
  • Includes D Weight

For models 1600, 2000, DD-3, and DD-4 Types A, B, C, D, DO, O, OO, OOO, and E

Downloads Available:

Durometer Scales

No Mass: A, B, E, & O

Additional Large Mass: C, D, & DO

Custom Configuration: OO, OOO, & OOO-S

Over Dimensions (DxWxH)

13 x 6.125 x 9.75 in (356 x 156 x 248 mm)

Specimen Table Dimensions

7 x 6 in (177 x 182 mm)

Throat Depth

3.25 in (83 mm)

Throat Height

3.125 in (79 mm)

Weight (without additional mass)

35 lb (16 kg)

Specimen Thickness

Minimum: 0.240 in (6 mm) per ASTM D2240

Maximum: varies with durometer model; ~3 in (75 mm)

Timer Operation

0 through 9999 seconds

Power Requirements

120 VAC 60 Hz 

Operating Temperature

73.4 ± 3.6 °F (23.0 ± 2.0 °C)

**Not intended for production control or continuous use.**