Johanson Manufacturing produces High Quality Trimmer Capacitors, Non Magnetic Variable Inductors and Microwave Tuning Elements.
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Microwave Tuning Elements are a very cost effective method for the precision tuning of microwave filters, oscillators, and other resonant structures. They are excellent for applications requiring precision, low loss tuning permitting costly mechanical and electrical tolerances to be relaxed.

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Features

  • One handed adjusting/tuning
  • Self-Locking/Constant torque mechanism
  • Eliminates need for "jam" nuts
  • Produced with fine-pitched threads for high resolution zero back lash positioning from 24 TPI to 108 TPI
  • Basic thread diameters available from 0.060" to 1.00", SI & US customary threads
  • Excellent electrical conduction (Contact resistance < 0.01 Ω)
  • Capable of re-tuning/re-positioning
  • Available with Gold, Silver, Nickel Plating and Chromatic Finish
  • Can be assembled with other materials, (Ceramics, Ferrites, Sapphire, Glass, etc.)
  • Available as a set, to provide a positive stop or extend travel range
  • Available in copper or ferrous alloys
  • Custom torque designs available

Typical Applications

  • Micro Wave Filter Positioning
  • Fiber Optic Alignment
  • Metering Valve Adjustment
  • X Y Z Stage Positioning
  • Self Locking Fastener
  • Limit Switch/Sensor Positioning


Posi-torque

Posi-torque Bushings are precision devices designed for applications requiring precision, low loss high resolution tuning. The self-locking, constant torque drive mechanism eliminates the need for locking nuts and assures stable, noise free adjustment in RF to Microwave frequencies. Posi-Torque Bushings are universal and can be used with standard SI and US customary screws.

P/N THREAD SIZE A B C D E F
LB1020-1 #0(0.60)-80 UNF-2B .145 .130 .1247 .035 .112 .030
LB1021-1 #2(0.86)-56 UNF-2B .175 .150 .1552 .035 .140 .030
LB1022-1 #4(0.112)-40 UNF-2B .300 .300 .2697 .090 .250 .035
LB1023-1 #6(0.138)-32 UNF-2B .330 .335 .2997 .100 .280 .035
LB1024-1 #10(0.190)-32 UNF-2B .380 .335 .3497 .100 .330 .035
LB1025-1 1/4(0.250)-28 UNF-2B .440 .335 .4097 .100 .390 .035
LB1026-1 #8(0.164)-32 UNF-2B .350 .335 .3197 .100 .300 .035

Custom design available upon request.


Taps

P/N THREAD SIZE H# #of Flutes (Ref) Recommended Tap Drill
7053 #0(0.60)-80 UNF-2 H2 2 3/64(.0469)
7054 #2(0.86)-56 UNF-2 2 #51(.067)
7056 3/8(.375)-64 UNS-2 4 23/64(.3594)
7057 .200-80 UNS-2 H3 4 3/16(.1875)
7059 5/32(.156)-64 UNS-2 4 9/64(.1406)
7060 .120-80 UNS-2 3 .#36(.1065)
7061 #10(.190)-64 UNS-2 4 #17(0.173)
7062 15/64(.234)-64 UNS-2 4 7/32(.2187)
7063 1/4(.250)-64 UNS-2 4 15/64(.2344)
7064 3/32(.094)-80 UNS-2 3 #45(.082)
7065 5/16(.312)-64 UNS-2 4 19/64(.2969)

Tuning Elements

P/N FIG. A B C D E F G THD(UNS-2A) ROD MAT'L
6924-10 1 .120 0.75 .072 .135 .035 .167 .120-80 BRASS
6924-11 .240
6925-4 .250 .148 .125 .120 .037 .250 .190-64
6925-5 .125 .023 .125
6926-13 .210 .106 .160 .267 .035 .210 .234-64
6926-17 .180 .284
6927-2 .360 .250 .265 .145 .360
6927-3 .255 .374
6928-6 .450 .345 .267 .240 .450
6929-2 .552 .450 .125 .210 .042 .552 .190-64
6965-1 .720 .500 .345 .531 .040 .720 .469-32
6940-1 2 .482 .148 .072 .187 .045 .240 .230 .156-64
6941-1 .555 .450 .125 ..265 .552 .234-64
6939-2 1.230 .148 .160 .280 .450 .250-64
6939-2 3 .240 .168 .062 .135 .035 .260 .138 .120-80 SAPPHIRE
6939-2 .359 1.105 .152 .267 .144 1.209 1.075 .234-64 ALUMINA
6939-2 .210 .115 .035 .219 .085 SAPPHIRE
6939-2 .359 .265 .144 .369 .235 ALUMINA
6939-2 .240 .168 .062 .135 .035 .260 .138 .120-80 ECCOSORB
6939-2 .359 .185 .152 .144 .144 .289 .155 .234-64

Tuning Rotors

P/N FIG. A B C D THD(UNS-2A) TAP ROD MAT'L
6316-1 1 .165 .075 .072 .018 .120-80 7060
6316-2 2 .223 .155 - .020
L6994-2 .175 .090 - .086-56 7054
L6995-0 1 .122 .030 .072 .094-80 7064
L6995-1 .167 .075
L6996-1 .250 .148 .125 .010 .156-64 7059
L6996-5 .295 .193
L6997-0 .554 .450 .160 .190-64 7061
L6997-17 .146 .042
6930-10 3 .369 .235 .152 SAPPHIRE
6930-14 ALUMINA

Tuning Rotors

P/N A ROD MAT'L DISK MAT'L NOM FREQ (GHZ)
4010-1 .970 INVAR BRASS 2
4011-1 .750 3
4012-1 .500 4
4012-2 .625
4014-1 .250 INVAR (1 piece) 9

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