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RDF Joint Simulators / Run Down Fixtures


Made in the USAJoint Simulators (also referred to as Rundown Fixtures or Adapters) are required for accurate torque measurement for power-driven torque controled tools (electric, hydraulic or pneumatic). They are not necessary or useful when measuring torque on manually-operated torque tools (screw-drivers, wrenches, etc.). They simulate the conditions found when using the tool in real-world conditions, allowing the speed of the power tool motor to ramp-up to normal operating speeds resulting in a more accurate and repeatable measurement of the torque .

Joints are defined by the degrees of rotation or the increase in torque per degree of rotation. A soft joint ensures that a tool has more time to operate and typically produces more repeatable test results, contrarily the hard joint provides less time for the tool to operate and generally produces more variation.

Per ISO 5393;

HARD Joint, which is 30 degrees or less of rotation from "snug" to final.
MEDIUM Joint, which is generally 180 - 400 degrees of rotation from "snug" to final.
SOFT Joint, which is typically 720 degrees or more of rotation from "snug" to final.

They are typically fabricated from machined steel with the appropriate drive size as needed. Internally it is comprised of a series of Belleville washers, designed to compress as the bolt tightens. By varying the arrangement of these washers, various joint rates can be simulated soft, medium and hard. Unless otherwise, specified, Joint Simulators are configured to simulate a medium joint. The joint rates can be adjusted by the user by changing the orientation of the Belleville washers upside down.


Features
  • Required for accurate torque measurement for power-driven torque controled tools (electric, hydraulic or pneumatic)
  • The RDF series is a one piece rundown for use where both a combination of hand and power tools are used.

Torque ranges
Lb-in Lb-ft N-m N-cm Kgf-m Kgf-cm Gf-cm

ModelRangeDrive
Size
Bolt Head SizeThread Size
RDIOA-50 0,35 N-m1/4" Male Sq3/16" Female Hex 1/4-20
RDIOA-100 0,7 N-m1/4" Male Sq3/16" Female Hex 1/4-20
RDIOA-2001,4 N-m1/4" Male Sq3/16" Female Hex 1/4-20
RDIA-101,13 N-m1/4" Male Sq3/16" Female Hex 1/4-20
RDIA-252,82 N-m 1/4" Male Sq3/16" Female Hex 1/4-20
RDIA-505,64 N-m1/4" Male Sq3/16" Female Hex 1/4-20
RDIA-10011,29 N-m1/4" Male Sq3/16" Female Hex 1/4-20
RDIA-15016,9 N-m1/4" Male Sq3/16" Female Hex 1/4-20
RDIA-25028,2 N-m3/8" Male Sq5/16" Female Hex 3/8-16
RDIA-50056,49 N-m3/8" Male Sq5/16" Female Hex 3/8-16
RDIA-75084,73 N-m3/8" Male Sq5/16" Female Hex 3/8-16
RDIA-1000112,98 N-m3/8" Male Sq5/16" Female Hex 3/8-16
RDFA-5067,79 N-m1/2" Male Sq5/16" Female Hex 3/8-16
RDFA-100135,58 N-m1/2" Male Sq1-1/8" Male Hex 3/4-10
RDFA-150203,37 N-m1/2" Male Sq1-1/8" Male Hex 3/4-10
RDFA-250338, 95 N-m1/2" Male Sq1-1/8" Male Hex 3/4-10
RDFA-500677,90 N-m3/4" Male Sq1-1/2" Male Hex 1"-8
RDFA-600813,49 N-m3/4" Male Sq1-1/2" Male Hex 1"-8
RDFA-7501016,86 N-m3/4" Male Sq1-1/2" Male Hex 1"-8
RDFA-10001355,81 N-m1" Male Sq1-1/2" Male Hex 1"-8
RDFA-20002711,63 N-m1-1/2" Male Sq3/4", 1" or 1-1/2" Female Sq NA
RDFA-25003389,54 N-m1-1/2" Male Sq3/4", 1" or 1-1/2" Female Sq NA
RDFA-30004067,45 N-m1-1/2" Male Sq3/4", 1" or 1-1/2" Female Sq NA
RDFA-50006779,08 N-m1-1/2" Male Sq3/4", 1" or 1-1/2" Female Sq NA

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Products

Product name
Price
Quantity
RDIOA-50 - 50 Oz-in Rundown Fixture 1/4" Drive
€ 155,00 
RDIOA-100 - 100 Oz-in Rundown Fixture 1/4" Drive
€ 155,00 
RDIOA-200 - 200 Oz-in Rundown Fixture 1/4" Drive
€ 155,00 
RDIA-10 - 10 Lb-in Rundown Fixture 1/4" Drive
€ 155,00 
RDIA-25 - 25 Lb-in Rundown Fixture 1/4" Drive
€ 155,00 
RDIA-50 - 50 Lb-in Rundown Fixture 1/4" Drive
€ 155,00 
RDIA-100 - 100 Lb-in Rundown Fixture 1/4" Drive
€ 155,00 
RDIA-150 - 150 Lb-in Rundown Fixture 1/4" Drive
€ 155,00 
RDIA-250 - 250 Lb-in Rundown Fixture 3/8" Drive
€ 155,00 
RDIA-500 - 500 Lb-in Rundown Fixture 3/8" Drive
€ 155,00 
RDIA-750 - 750 Lb-in Rundown Fixture 3/8" Drive
€ 155,00 
RDIA-1000 - 1000 Lb-in Rundown Fixture 3/8" Drive
€ 155,00 
RDFA-100 - 100 Lb-ft Rundown Fixture 1/2" Drive
€ 283,00 
RDFA-150 - 150 Lb-ft Rundown Fixture 1/2" Drive
€ 283,00 
RDFA-250 - 250 Lb-ft Rundown Fixture 1/2" Drive
€ 283,00 
RDFA-500 - 500 Lb-ft Rundown Fixture 1/2" Drive
€ 564,00 
RDFA-600 - 600 Lb-ft Rundown Fixture 3/4" Drive
€ 564,00 
RDFA-750 - 750 Lb-ft Rundown Fixture 3/4" Drive
€ 564,00 
RDFA-1000 - 1000 Lb-ft Rundown Fixture 1" Drive
€ 1.327,00 
RDFA-2000 - 2000 Lb-ft Rundown Fixture 1.5" male to 1" female
€ 1.327,00 
RDFA-2500 - 2500 Lb-ft Rundown Fixture 1.5" male to 1" female
€ 1.327,00 
RDFA-3000 - 3000 Lb-ft Rundown Fixture 1.5" male to 1" female
€ 1.531,00 
RDFA-5000 - 5000 Lb-ft Rundown Fixture 1.5" male to 1.5" female
€ 1.531,00 
All mentioned prices are excluding VAT & excluding shipment costs.
Availability: Available , preorder 1-2 weeks , special order, request