Techflex Enterprises Inc.
Specializing in Smoothbore PTFE Braided Hose & Hose End Connections


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Fitting Assembly Procedures

Step 1

Techflex Hose Fitting Assembly Procedure, Step 1A Techflex Hose Fitting Assembly Procedure, Step 1B

Calculate the Hose Cut Length by subtracting the combined Fitting Deduct Lengths from the desired Finished Assembly Length.

Step 2

Techflex Hose Fitting Assembly Procedure, Step 2

A = Swage Diameter / B = Swage Stop / C = Swage Die

Wrap masking tape around the hose at the approximate cutting location. Accurately mark the desired Hose Cut Length on the masking tape and cut the hose. Masking tape is used to accurately mark the determined Hose Cut Length and to hold the braid wire in position during hose cutting. Abrasive or steel cutting wheels provide satisfactory hose cuts. Note: A .01" to .03" gap is required between the top of the swage die and the hex shoulder of the fitting.

Step 3

Techflex Hose Fitting Assembly Procedure, Step 3

Install both swage collars in alternate positions on the hose with the shoulder of each collar close to each hose end.

Step 4

Techflex Hose Fitting Assembly Procedure, Step 4

Install the correct Hose Expander (P/N: T200020-xx) in a rotary chuck. Slide the collar flush with the hose end and push the hose end fully onto the rotating Hose Expander. Note: To prevent damage to the PTFE liner, the rotary chuck must not exceed 400 RPM.

Step 5

Techflex Hose Fitting Assembly Procedure, Step 5

Press or push the fitting to insert the stem into the hose all the way to the insert shoulder. Then, slide the hose collar forward to the main body of the fitting.

Step 6

Lubricate the swage collar with a dry PTFE lubricant.

Step 7

Techflex Hose Fitting Assembly Procedure, Step 7

Select the proper Swage Die set (P/N: TFSDx-xx). Install both swage die halves, including the prepared hose end, into the Die Base Plate (P/N: T2000017).

Step 8

Techflex Hose Fitting Assembly Procedure, Step 8

Place the required fitting Swage Stop (P/N: T200021-xx) on the swage die surface.

Step 9

Techflex Hose Fitting Assembly Procedure, Step 9

Energize the swaging ram face until it contracts the Swage Stop (swage is complete), then retract the ram.

Step 10

Techflex Hose Fitting Assembly Procedure, Step 10

Remove the Swage Stop, then the Swage Die, from the base plate. Inspect the swaged end for possible defects.

Step 11

Techflex Hose Fitting Assembly Procedure, Step 11

Verify the correct Swage Diameter by measuring the swaged collar diameter directly next to the die-half segment lines. Be careful not to measure the raised lines.

Hose Dash Size: -03 -04 -05 -06 -08 -10 -12 -16
Swaged Collar O.D. (in): * .308 .382 .468 .533 .632 .739 .883 1.194
* Swage Tolerance = +.004 / -0.000, measured on the split die axis.
Replace Swage Die when measurement exceeds +.004.

Step 12

Repeat steps 4 through 12 for the remaining hose end.


Swage Die Maintenance

Swaging problems are greatly reduced when a clean Swage Die is used. For proper cleaning, a strip of 500 grit emery or crocus cloth wrapped around a rotating arbor is recommended. Observe the following procedure:

Step 1

Place the swage die to be cleaned in the die base plate.

Step 2

Insert the 1/4" Cleaning Arbor (P/N: T200019) into a hand grinder or drill motor with the split end out.

Step 3

Swage Die Maintenance Procedure, Step 3

Secure a strip of 500 grit paper in the split end of the Cleaning Arbor and wrap a small amount around the end of the arbor.

Step 4

Swage Die Maintenance Procedure, Step 4

Place the Cleaning Arbor with the emery cloth into the Swage Die and energize the motor.

Step 5

Oscillate the Cleaning Arbor within the Swage Die for approximately 5 seconds, then stop.

Step 6

Remove the Swage Die halves from the Base Plate for inspection. The internal die surface should be cleaned to a near mirror finish.

Repeat the cleaning process when swaged collars begin to show a non-bright or matted surface finish.


Please call, fax or e-mail us for further information, prices, and delivery schedules.

Techflex Enterprises Inc., P.O. Box 727, West Springfield, MA 01090 - Telephone (800) 877-6220 / Fax: (413) 592-2800


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