Flanges (Flat, Groove and Choke)

The wide variety of flanges detailed here are available as standard on the majority of our products. The wide variety of flanges detailed here are available as standard on the... Read full description

SKU: Flanges

Categories: Waveguides

Description

The wide variety of flanges detailed here are available as standard on the majority of our products.

The wide variety of flanges detailed here are available as standard on the majority of our products. The flanges are based on the major international flange interface specifications and we also have many of the more obscure standards and customer specific flanges on record.

Standard flanges are available in Brass or Aluminium and other materials on request. Certain designs are available from stock to provide a minimum delivery lead-time.

We offer technical support at the design stage to ensure the most suitable flange is chosen for every application.

All flanges are manufactured to the highest quality standards

Download the flange guide specifications for more details.

More information on waveguide sizes

Flange types

There are 3 flange types - the plain, the “O” ring and the choke.

Plain flange Plain flange - UBR

It has a flat face – it is also sometimes called a plain or a cover flange.

When mated to another plain or ‘O’ ring flange it gives the best match performance. It can be used with either an ‘O’ ring flange, a choke flange or another plain flange

O ring flange ”O” ring flange PBR

It has a flat face with a groove cut in it to take an ‘O’ ring for environmental or pressure sealing. It is used together with a plain flange.

It is permissible, but not recommended, to use with another PBR flange and “O” ring.

Choke flange cross section

Choke flange

Choke flange - CBR

It has 2 grooves cut into it. The outer groove is for an ‘O’ ring (the same as the PBR flange). The inner groove is the choke and the region between the waveguide aperture and the inner groove is sub flush. The distance from the waveguide to the bottom of the choke groove is ¼ wavelength so the reflection presents a short circuit at the waveguide.

It must be used together with a plain flange, and is used in very high power systems.

It essential that the flange is aligned precisely to minimise the return loss degradation.

If the flange is correctly aligned and used at the frequency the choke is designed for (typically the band centre) then it offers the best leakage performance (but the worst match performance - it is possible to achieve similar leakage performance using rf shims without the degradation in match.)

Flange Finder

To find a particular flange, start by viewing the waveguide sizes below. These are the more common flanges but we have a large library of flange standards on record.

WG6, R14, WR650, RG 69/U

Flange No.
RECTANGULAR PLAIN 10 HOLE RECTANGULAR PLAIN 10 HOLE F06-012
F06-122
F06-542
F06-544
UDR 14
CPR 650F
UG 1714/U
UG 1720/U
RECTANGULAR SEAL GROOVE 10 HOLE RECTANGULAR SEAL GROOVE 10 HOLE F06-031
F06-021
F06-652
F06-582
F06-654
F06-584
PDR 14
CPR 650G
UG 417B/U UG
1362/U
UG 418B/U
UG 1343/U

 

WG8 R22 WR430 RG104/U

 

Flange No.
RECTANGULAR PLAIN 10 HOLE RECTANGULAR PLAIN 10 HOLE F 08-012
F 08-122
F 08-542
F 08-544
UDR 22
CPR 430F
UG 1716/U
UG1711/U
RECTANGULAR SEAL GROOVE 10 HOLE RECTANGULAR SEAL GROOVE 10 HOLE F08-031
F08-021
F08-652
F08-582
F08-654
F08-584
PDR 22
CPR 430G
UG435B/U
UG 1344/U
UG437B/U
UG1345/U

 

WG9A R26 WR340 RG112/U

 

Flange No.
RECTANGULAR PLAIN 10 HOLE RECTANGULAR PLAIN 10 HOLE F 9A-012
F 9A-122
F 9A-542
F 9A-544
UDR 26
CPR 340F
UG 1712/U
UG 1713/U
RECTANGULAR SEAL GROOVE 10 HOLE RECTANGULAR SEAL GROOVE 10 HOLE F9A-031
F9A-021
F9A-652
F9A-582
F9A-654
F9A-584
PDR 26
CPR 340G
UG553A/U
UG 1346/U
UG554A/U
UG 1347/U

 

WG10 R32 WR284 RG48/U

 

Flanges for WG10, R32, WR284, RG 48/U189131
Rectangular Flange Plain 10 hole Rectangular Flange Plain 10 hole UDR 32 TWS F10-012 A=76.2mm B=114.3mm E=59.14mm F=29.36mm G=65.08mm H=97.22mm thickness=10mm hole dia: blue=green=6.65mm red= 6.93mm CPR 284F TWS F10-112 A=76.2mm B=114.3mm E=59.13mm F=29.36mm G=65.07mm H=97.23mm thickness=10mm hole dia: blue=red=6.59mm green= 6.54mm UG 1724/U TWS F10-542 A=76.2mm B=114.3mm E=59.14mm F=29.36mm G=65.08mm H=97.24mm thickness=9.65 hole dia: blue=red=6.62mm green= 6.54mm UG 1725/U TWS F10-544 A=76.2mm B=114.3mm E=59.14mm F=29.36mm G=65.08mm H=97.24mm thickness=9.65 hole dia: blue=red=6.60mm green= 6.54mm
Rectangular Flange + seal groove 10 hole Rectangular Flange + seal groove 10 hole PDR 32 TWS F10-031 A=76.2mm B=114.3mm E=59.14mm F=29.36mm G=65.08mm H=97.22mm thickness=10mm hole dia: blue=green=6.93mm red= 6.65mm CPR 284G TWS F10-021 A=76.2mm B=114.3mm E=59.14mm F=29.36mm G=65.08mm H=97.22mm thickness=10mm hole dia: blue=red=6.55mm green= 6.60mm UG 1348/U TWS F10-582 A=76.2mm B=114.3mm E=59.14mm F=29.36mm G=65.08mm H=97.24mm thickness=9.65 hole dia: blue=red=6.60mm green= 6.54mm UG 1349/U TWS F10-584 A=76.2mm B=114.3mm E=59.14mm F=29.36mm G=65.08mm H=97.24mm thickness=9.65 hole dia: blue=red=6.60mm green= 6.54mm
Round Flange Plain 6 hole Round Flange Plain 6 hole 5985-99-083-1560 TWS F10-052 A=149.22mm thickness=7.93mm hole dia=6.53mm on 136.53mm PCD
Round Flange + seal groove + choke 6 hole Round Flange + seal groove + choke 6 hole 5985-99-083-1558 TWS F10-071 A=149.22mm thickness=7.93mm hole dia=6.53mm on 136.53mm PCD
Round Flange Plain 8 hole Round Flange Plain 8 hole UAR 32 TWS F10-332 A=134.9mm thickness=7.90mm hole dia=6.52mm on 120.65mm PCD UG 53/U TWS F10-082 A=134.95mm thickness=6.35mm hole dia=6.58mm on 120.65mm PCD UG 584/U TWS F10-084 A=134.95mm thickness=6.35mm hole dia=6.58mm on 120.65mm PCD
Round Flange + seal groove 8 hole Round Flange + seal groove 8 hole PAR 32 TWS F10-362 A=134.9mm thickness=7.92mm hole dia=6.52mm on 120.65mm PCD 083-0010 TWS F10-042 A=134.94mm thickness=7.24mm hole dia=6.51mm on 120.65mm PCD
Round Flange + seal groove + choke 8 hole Round Flange + seal groove + choke 8 hole CAR 32 TWS F10-151 UG54B/U TWS F10-091 A=134.90mm thickness=7.90mm tapped holes dia= 1/4in-20 UNC-2B on 120.7mm PCD 5985-99-83-0009 TWS F10-061 A=134.04mm thickness=7.94mm hole dia=6.52mm on 120.65mm PCD UG 585A-U TWS F10-093 A=134.95mm thickness=7.95mm tapped holes dia= 1/4in-20 UNC-2B on 120.65mm PCD

 

WG11A R4O WR229

 

Flange No.
RECTANGULAR PLAIN 10 HOLE RECTANGULAR PLAIN 10 HOLE F11A-012
F11A-122
F11A-542
F11A-544
UDR 40
CPR 229F
UG 1726/U
UG 1727/U
RECTANGULAR SEAL GROOVE 10 HOLE RECTANGULAR SEAL GROOVE 10 HOLE F11A-031
F11A-021
F11A-582
F11A-584
PDR 40
CPR 229G
UG 1350/U
UG 1351/U
RECTANGULAR
MINIATURE
8 HOLE
RECTANGULAR MINIATURE 8 HOLE F11-202
F11-112
CMR 229
UER 40

 

WG12 R48 WR187 RG49/U

 

Flange No.
RECTANGULAR PLAIN
8 HOLE
RECTANGULAR SEAL GROOVE 8 HOLE F12-122
F12-012
F12-572
F12-522
F12-574
F12-554
CPR 187F
UDR 48
UG 1475/U
UG 1728/U
UG 1480/U
UG 1729/U
RECTANGULAR SEAL
GROOVE 8 HOLE
RECTANGULAR SEAL GROOVE 8 HOLE F12-031
F12-592
F12-594
F12-021
PDR 48
UG 1352/U UG
1353/U CPR 187G
RECTANGULAR
MINIATURE 8 HOLE
RECTANGULAR MINIATURE 8 HOLE F12-202
F12-112
CMR 178 UER 40
ROUND PLAIN 8 HOLE Round plain 8 hole diagram F12-342
F12-162
F12-164
UAR 48
UR 149A/U
UG 407/U
ROUND SEAL
GROOVE 8 HOLE
ROUND SEAL GROOVE 8 HOLE F12-142
F12-042
PAR 48
083-0042
ROUND CHOKE 8 HOLE Round choke 8 hole diagram F12-381
F12-181
F12-071
F12-183
CAR 48
UG 148C/U
083-0041
UG406B/U

 

WG13 R58 WR159

 

Flange No.
RECTANGULAR PLAIN
8 HOLE
RECTANGULAR PLAIN 8 HOLE F13-122
F13-012
F13-552
F13-554
CPR 159F
UDR 58
UG 1730/U
UG 1731/U
RECTANGULAR SEAL
GROOVE
8 HOLE
RECTANGULAR SEAL GROOVE 8 HOLE F13-021
F13-031
F13-592
F13-594
CPR 159G
PDR 58
UG 1354/U
UG 1355/U
RECTANGULAR
MINIATURE 8 HOLE
RECTANGULAR MINIATURE 8 HOLE F13-202
F13-112
CMR 159 UER 58
ROUND PLAIN
6 HOLE
ROUND PLAIN 6 HOLE F13-352 UAR 58
ROUND SEAL
GROOVE
6 HOLE
ROUND SEAL GROOVE 6 HOLE F13-372 PAR 58
ROUND CHOKE
6 HOLE
ROUND CHOKE 6 HOLE F13-391 CAR 58

 

WG14 R70 WR137 RG50/U

 

Flanges for WG14, R70, WR137, RG 50/U
Rectangular Flange Plain 8 hole Rectangular Flange Plain 8 hole CPR 137F TWS F14-122 A=49.34mm B=68.39mm E=36.53mm F=15.88mm G=22.23mm H=55.57mm thickness=9.9mm hole dia: blue=red=5.05mm UDR 70 TWS F14-012 A=49.45mm B=68.55mm E=36.52mm F=15.88mm G=22.22mm H=55.58mm thickness=10mm hole dia: red=5.39mm blue= 5.16mm UG 1476/U TWS F14-572 UG 1732/U TWS F14-552 A=49.41mm B=68.46mm E=36.53mm F=15.90mm G=22.24mm H=55.58mm thickness=6.35 hole dia: blue=red=5.03mm UG 1481/U TWS F14-574 (aluminium) UG 1733/U TWS F14-554 (aluminium) A=49.41mm B=68.46mm E=36.53mm F=15.90mm G=22.24mm H=55.58mm thickness=6.35 hole dia: blue=red=5.03mm
Rectangular Flange + seal groove 8 hole RECTANGULAR SEAL GROOVE 8 HOLE CPR 137G TWS F14-021 A=49.45mm B=68.55mm E=36.52mm F=15.88mm G=22.22mm H=55.58mm thickness=10mm hole dia: red=5.39mm blue=5.16mm PDR70 TWS F14-031 A=49.45mm B=68.55mm E=36.52mm F=15.88mm G=22.22mm H=55.58mm thickness=10mm hole dia: red=5.39mm blue=5.16mm UG 1356/U TWS F14-592 A=44.58mm B=63.63mm E=32.51mm F=15.88mm G=19.05mm H=48.41mm thickness=6.35 hole dia: blue=red=4.32mm UG 1357/U TWS F14-594 (aluminium) A=49.40mm B=68.45mm E=36.53mm F=15.90mm G=22.25mm H=55.58mm thickness=6.35 hole dia: blue=red=5.03mm
RECTANGULAR MINIATURE 8 HOLE RECTANGULAR MINIATURE 8 HOLE F14-202 F14-112 CMR 137 UER 70
Round Flange Plain 6 hole ROUND PLAIN 6 HOLE F14-352 F14-082 F14-084 UAR 70 UG 344/U UG 441/U
Round Flange + seal groove 6 hole  ROUND SEAL GROOVE 6 HOLE F14-372 F14-042 F14-044 PAR 70 083-0038 083-0132
Round Flange + seal groove + choke 6 hole ROUND CHOKE 6 HOLE F14-391 F14-281 F14-283 F14-071 F14-073 CAR 70 UG343B/U UG440B/U 083-0037 083-0131

 

WG15 R84 WR112 RG51/U

 

Flange No.
RECTANGULAR PLAIN 8 HOLE Rectangular Flange Plain 8 hole F15-122
F15-012
F15-572
F15-552
F15-574
F15-554
CPR 112 F
UDR 84
UG 1477/U
UG 1734/U
UG 1482/U
UG 1735/U
RECTANGULAR SEAL GROOVE 8 HOLE Rectangular Flange + seal groove 8 hole F15-021
F15-031
F15-592
F15-594
CPR 112G
PDR 84
UG 1358/U
UG 1359/U
RECTANGULAR MINIATURE 8 HOLE RECTANGULAR MINIATURE 8 HOLE F15-202
F15-112
CMR 112
UER 84
Square Flange Plain Square Flange Plain F15-402
F15-442
F15-444
F15-462
F15-682
UBR 84
UG 51/U
UG 138/U
54-005
54-001
Square Flange + seal groove Square Flange + seal groove F15-412
F15-432
F15-434
PBR 84
083-0034
011-9112
Square Flange + seal groove + choke Square Flange + seal groove + choke F15-481
F15-421
F15-451
F15-521
F15-453
F15-523
59D-015
CBR 84
UG 52B/U
083-0033
UG 137B/U
083-0134
ROUND SEAL GROOVE COUPLING ROUND SEAL GROOVE COUPLING F15-222
F15-474
011-9660
012-0892
ROUND CHOKE COUPLING ROUND CHOKE COUPLING F15-231
F15-533
011-9661
012-0893

 

WG16 R100 WR90 RG52/U

 

Flange No.
RECTANGULAR PLAIN 8 HOLE RECTANGULAR PLAIN 8 HOLE F16-122
F16-012
F16-572
F16-574
F16-554
F16-552
CPR 90F
UDR 100
UG 1478/U
UF 1483/U
UG 1737/U
UG 1736/U
RECTANGULAR SEAL GROOVE 8 HOLE RECTANGULAR SEAL GROOVE 8 HOLE F16-021
F16-031
F16-592
F16-594
CPR 90G
PDR 100
UG 1360/U
UG 1361/U
RECTANGULAR MINIATURE 8 HOLE RECTANGULAR MINIATURE 8 HOLE F16-202
F16-112
CMR 90
UER 100
SQUARE PLAIN  SQUARE PLAIN F16-402
F16-442
F16-444
F16-662
F16-664
UBR 100
UG 39/U
UG 135/U
53C-009
53C-010
SQUARE SEAL GROOVE SQUARE SEAL GROOVE F16-412
F16-432
F16-434
PBR 100
083-0052
083-0148
SQUARE CHOKE SQUARE CHOKE F16-421
F16-481
F16-521
F16-511
F16-483
F16-513
F16-523
F16-453
F16-451
CBR 100
UG 40B/U
083-0051
083-1611
UG 136B/U
011-9114
012-0891
59D-014
59D-013
ROUND PLAIN COUPLING ROUND PLAIN COUPLING F16-252 083-0004
ROUND SEAL GROOVE COUPLING ROUND SEAL GROOVE COUPLING F16-474 083-0151
ROUNG CHOKE COUPLING ROUNG CHOKE COUPLING F16-23
F16-533
083-0003
083-0150

 

WG17 R120 WR75

 

Flanges for WG 17, R120, WR75
Rectangular Flange Plain 6 hole Rectangular Flange Plain 6 hole 154 IEC - UDR 120 TWS F17-012 A=39.5mm B=49.50mm E=28.58mm G=15.88mm H=38.10mm red=4.31mm blue=4.09mm Thickness=7.5mm
Rectangular Flange + seal groove 6 hole Rectangular Flange + seal groove 6 hole 154 IEC - PDR 120 TWS F17-031 A=39.5mm B=49.0mm E=28.58mm G=15.88mm H=38.10mm red=4.32mm blue=4.09mm Thickness=7.5mm
Square Plain Square Plain 154 IEC - UBR 120 TWS F17-402 A=38.10mm B=38.10mm E=28.50mm F=26.42mm hole dia 4.09mm Thickness=4.1mm MIL 3922/53C-007 TWS F17-442 A=38.10mm B=38.10mm E=28.50mm F=26.42mm hole dia 3.70mm dia Thickness=5.16mm MIL 3922/53C-013 TWS F17-662 A=38.35mm B=38.35mm E=28.50mm F=26.42mm hole dia 3.70mm Thickness=6.35mm MIL 3922/53C-014 TWS F17-664 (aluminium) A=38.35mm B=38.35mm E=28.50mm F=26.42mm hole dia 3.70mm Thickness=6.35mm
Square + seal groove Square + seal groove 154 IEC - PBR 120 TWS F17-412 A=38.10mm B=38.10mm E=28.50mm F=26.42mm hole dia 4.09mm Thickness=4.1mm 5985-99-014-1436 TWS F17-432 A=38.10mm B=38.10mm E=28.50mm F=26.40mm hole dia 3.70mm Thickness=4.1mm
Square + seal groove + choke Square + seal groove + choke 154 IEC - CBR 120 TWS F17-421 A=38.10mm B=38.10mm E=28.50mm F=26.42mm hole dia 4.09mm Thickness=4.1mm 5985-99-014-1437 TWS F17-521 A=38.10mm B=38.10mm E=28.50mm F=26.42mm hole dia 3.70mm Thickness=4.1mm MIL-F-3922/59D-010 TWS F17-481 A=38.10mm B=38.10mm E=28.50mm F=26.42mm hole dia:= 6/32 UNC tapped Thickness=5.16mm

 

WG18 R140 WR62 RG91/U

 

Flanges for WG 18, R140, WR62, RG91/U1
Rectangular Flange Plain 6 hole Rectangular Flange Plain 6 hole 154 IEC - UDR 140 TWS F18-012 A=36.5mm B=44.50mm E=25.4mm G=11.94mm H=33.34mm red=4.31mm blue=4.09mm Thickness=7.5mm
Rectangular Flange + seal groove 6 hole Rectangular Flange + seal groove 6 hole 154 IEC - PDR 140 TWS F18-031 A=36.5mm B=44.5mm E=25.4mm G=11.94mm H=33.34mm red=4.31mm blue=4.09mm Thickness=7.5mm
Square Plain Square plain 154 IEC - UBR 140 TWS F18-402 A=33.4mm B=33.4mm E=24.28mm F=25.25mm hole dia 4.09mm Thickness=4.1mm UG419/U TWS F18-442 A=33.35mm B=33.35mm E=24.28mm F=25.25mm hole dia 3.70mm Thickness=3.2mm UG1655/U TWS F18-444 (aluminium) A=33.55mm B=33.55mm E=24.28mm F=25.25mm hole dia 3.70mm Thickness=3.2mm 53C-011 TWS F18-662 53C-012 TWS F18-664 (aluminium) 53C-017 TWS F18-672 (aluminium)
Square + seal groove Square + seal groove 154 IEC - PBR 140 TWS F18-412 A=33.4mm B=33.4mm E=24.28mm F=25.25mm hole dia 4.09mm Thickness=4.1mm 5985-99-083-0030 TWS F18-432 A=33.4mm B=33.4mm E=24.28mm F=25.25mm hole dia 3.69mm Thickness=4.1mm
Square + seal groove + choke Square + seal groove + choke 154 IEC - CBR 140 TWS F18-421 A=33.4mm B=33.4mm E=24.28mm F=25.25mm hole dia 4.09mm Thickness=4.1mm UG541A/U TWS F18-481 A=33.4mm B=33.4mm E=24.28mm F=25.25mm hole dia 6-32 UNC tapped Thickness=4.78mm 5985-99-083-0029 TWS F18-521 A=33.4mm B=33.4mm E=24.30mm F=25.25mm hole dia 3.69mm Thickness=4.1mm UG1666/U TWS F18-483 (aluminium) A=33.4mm B=33.4mm E=24.28mm F=25.25mm hole dia:= 6-32 UNC tapped Thickness=4.78mm
Round + seal groove coupling Round + seal groove coupling 5985-99-011-9662 TWS F18-222 A=33.32m B=30.86mm Thickness=5.08mm
Round + seal groove + choke coupling Round + seal groove + choke coupling 5985-99-011-9663 TWS F18-231 A=33.32m B=30.86mm Thickness=5.08mm

 

WG19 R180 WR51

 

Flange No.
RECTANGULAR PLAIN
6 HOLE
RECTANGULAR PLAIN 6 HOLE F19-012 UDR 180
RECTANGULAR SEAL
GROOVE
6 HOLE
RECTANGULAR SEAL GROOVE 6 HOLE F19-031 PDR 180
SQUARE PLAIN Square plain F19-402 UBR 180
SQUARE SEAL
GROOVE
Square seal groove F19-412 PBR 180
SQUARE CHOKE Square choke F19-421 CBR 180
ROUND SEAL
GROOVE COUPLING
ROUND SEAL GROOVE COUPLING F19-222 011-9664
ROUND CHOKE
COUPLING
ROUND CHOKE COUPLING F19-231 011-9665

 

WG20 R220 WR42 RG53/U

 

Flanges for WG 20, R220, WR42, RG53/U
Rectangular Flange Plain 6 hole Rectangular Flange Plain 6 hole 154 IEC - UDR 220 TWS F20-012 A=32.25mm B=38.25mm E=20mm G=10.2mm H=28mm red=3.26mm blue=3.08mm Thickness=6.5mm
Rectangular Flange + seal groove 6 hole Rectangular Flange +seal groove 6 hole 154 IEC - PDR 220 TWS F20-031 A=32.25mm B=38.25mm E=20mm G=10.2mm H=28mm red=3.26mm blue=3.08mm Thickness=7.0mm
Square Plain Square plain 154 IEC - UBR 220 TWS F20-402 A=22.35mm B=22.35mm E=17.02mm F=16.26mm hole dia 3.08mm Thickness=4.1mm UG595/U TWS F20-442 A=22.35mm B=22.35mm E=17.02mm F=16.26mm hole dia 2.98mm Thickness=4.78mm UG597/U TWS F20-444 (aluminium) A=22.35mm B=22.35mm E=17.02mm F=16.26mm hole dia 2.98mm Thickness=4.78mm
Square + seal groove Square + seal groove 154 IEC - PBR 220 TWS F20-412 A=22.35mm B=22.35mm E=17.02mm F=16.26mm hole dia 3.08mm Thickness=4.1mm 5985-99-011-9658 TWS F20-432 A=22.35mm B=22.35mm E=17.02mm F=16.26mm hole dia 2.97mm Thickness=4.1mm
Square + seal groove + choke Square + seal groove + choke 154 IEC - CBR 220 TWS F20-421 A=22.4mm B=22.4mm E=17.02mm F=16.26mm hole dia 3.08mm Thickness=4.1mm UG596A/U TWS F20-481 A=22.35mm B=22.35mm E=17.02mm F=16.26mm hole dia .112-40 UNC tapped Thickness=3.96mm 5985-99-011-9659 TWS F20-521 UG598A/U TWS F20-483 (aluminium) A=22.35mm B=22.35mm E=17.02mm F=16.26mm hole dia:= .112-40 UNC tapped Thickness=3.96mm
Round + seal groove coupling Round + seal groove coupling 154 IEC - PCR 220 TWS F20-492 5985-99-011-9666 TWS F20-222 A=21.59mm B=19.3mm Thickness=4.83mm
Round + seal groove + choke coupling Round + seal groove + choke coupling 154 IEC - CCR 220 TWS F20-501 5985-99-011-9667 TWS F20-231

 

WG21 R260 WR34

 

Flange No.
RECTANGULAR
PLAIN 6 HOLE
RECTANGULAR PLAIN 6 HOLE F21-021 UDR 260
RECTANGULAR SEAL
GROOVE 6 HOLE
RECTANGULAR SEAL GROOVE 6 HOLE F21-031 PDR 260
SQUARE PLAIN SQUARE PLAIN F21-402 F21-442 UBR 260 UG 1530/U
SQUARE SEAL
GROOVE
SQUARE SEAL GROOVE F21-412 PBR 260
SQUARE CHOKE SQUARE CHOKE F21-421 CBR 260
ROUND SEAL
GROOVE COUPLING
ROUND SEAL GROOVE COUPLING F21-492 PCR 260

 

WG22 R320 WR28 RG96/U

 

Flanges for WG 22, R320, WR28, RG96/U
Rectangular Flange Plain 6 hole Rectangular Flange Plain 6 hole 154 IEC - UDR 320 TWS F22-012
Rectangular Flange + seal groove 6 hole Rectangular Flange Plain + seal 6 hole 154 IEC - PDR 320 TWS F22-031 A=31.25mm B=34.25mm E=19.4mm G=10.2mm H=24.4mm red=3.26mm blue=3.08mm Thickness=6.5mm
Square Plain Square plain 154 IEC - UBR 320 TWS F22-402 A=19.18mm B=19.18mm E=13.46mm F=12.7mm hole dia 3.08mm Thickness=4.1mm UG599/U TWS F22-442 (hole spacing and diameters identical to 5985-99-012-4834) A=19.05mm B=19.05mm E=13.46mm F=12.7mm hole dia 2.98mm Thickness=4.75mm
Square + seal groove Square + seal groove 154 IEC - PBR 320 TWS F22-412 A=19.18mm B=19.18mm E=13.46mm F=12.7mm hole dia 3.08mm Thickness=4.1mm 5985-99-012-4834 TWS F22-432 E=13.46mm F=12.7mm hole dia 2.98mm
Square + seal groove + choke Square + seal groove + choke 154 IEC - CBR 320 TWS F22-421 UG600A/U TWS F22-481 A=19.18mm B=19.18mm E=13.46mm F=12.6mm hole dia .112-40 UNC tapped Thickness=2.77mm 5985-99-012-4835 TWS F22-521 59D012 TWS F22-451
Round coupling Round coupling 5985-99-083-0019 TWS F22-252
Round + seal groove coupling Round + seal groove coupling 154 IEC - PCR 320 TWS F22-492 A=18.68mm B=16.08mm Thickness=4.9mm 5985-99-083-0018 TWS F22-222

 

Notes:

Material
The flange and waveguide materials should match i.e. aluminium flanges for aluminium waveguide or brass flanges for copper or brass waveguide.

Choke flanges
A choke flange must be used together with a plain flange - it is usually used for very high powers to improve the apparent contact of the joint, but as the choke is frequency sensitive, the match seen at the top and bottom of the band is generally worse than a plain / plain combination. .An alternative to a choke / plain joint for high powers is a plain / plain joint together with a high power shim. The shims are generally crushable (single use) or have sprung fingers to ensure good contact. Choke flanges are more sensitive to misalignment so the correct bolts should be used - fixing kits can be supplied to suit.

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