Power Dynamics Inc.

Beckwith Electronics

Hamburg, Illinois 62045
(618) 232-1139
(618) 232-1172 fax

Power Dynamics, Inc.

EXCLUSIVE "VISE GRIP"
Power Dynamics, Inc. Collet Knobs are designed to enhance the appearance and function of panel instruments and audio/video equipment. All PDI Knobs have an exclusive mounting feature using the same tightening principal as a drill chuck, which tightens on the complete 360° surface of the shaft. Once tightened, a vise-like grip is maintained without the use of a set-screw eliminating the need for re-calibration thus attributing to a long service life and an excellent fit on the shaft. All PDI Knobs have pre-loaded collets. Simply push on and tighten!

OTHER SPECIFICATIONS
All standard Knobs, Caps and Accessories (including matte finish) are produced from polyamide. The metalized knobs are made of galvanically nickel-plated ABS. The transparent dials are made of SAN. Brass 58 is used for the collets, sleeves and nuts. The surface of the screw and washer is protected against corrosion while the temperature stability with normal mechanical stresses is -20°-+70°C.
BINDING POSTS
Power Dynamics, Inc. also offers an extensive line of Binding Posts available in eight colors. PDI Binding Posts are used for 4mm plug and wire connection up to 2mm in diameter. All Binding Posts include a locking device, captive insulation against electric shock, and can be fitted to front plates up to 6mm in thickness. All plastic parts are made of Polyamide. Please call Beckwith Electronics for specifications and ordering codes.

COLORS & FINISHES
Collet Knobs are available in standard or matte finish with a choice of four colors and aluminum finishes. All knobs in the catalog marked "Aluminum" refer to Aluminum FINISH Only!

Caps
Caps are available in three models: Flat, Peaked and Curved. All caps are available in eight colors in standard or matte finish. Flat Caps can also be furnished with an indicator line, straight or curved arrow or with an aluminum disc. Peaked Caps are available with a pointer and Curved Caps are available with a line. Special colors and markings are available upon request. Caps easily snap into a defined position on top of the knob.

Dials
A large selection of figure dials for indexing angles of 27°30', 30°, 36°, and 60° , together with colored discs dispense with the need for expensive manufacturing of special units.

HOW TO ORDER
Power Dynamics, Inc. has created easy-to-use Knob and Accessory Ordering Codes. Unless otherwise specified within, each knob and accessory part number consists of seven digits. Each individual digit or set of digits represent a specific particle of that particular knob or accessory.

The first two digits (first box) of the ordering code represent the knob or accessory style. For example, the number '21' represents a 'Standard Knob with a line'.
The third and fourth digits (second box) of the ordering code represent the size of the knob or accessory. For example, the number '15' represents a 15mm diameter.
The fifth and sixth digits (third box) either represent the shaft/collet size of a knob or the finish of an accessory. For example, the number '30' represents a 3mm shaft diameter of a knob.
Lastly, the seventh digit (fourth box) of the ordering code represents the color of the knob or accessory. For example, the number 3 represents the color black.
Free samples available upon request.

Collet Knobs & Accessories

Standard Knobs

Style O/C - Knob Diameter O/C - Shaft Diameter O/C Color O/C

Standard Knob 20 08mm (.31) 08 3mm 30 Aluminum 0

Standard Matte Finish 26 10mm (.39) 10 1/8" 31 Lt. Gray 1

Standard with a Line 21 13mm (.51) 13 4mm 40 Gray 2

Standard Matte Finish with a Line 27 15mm (.59) 15 6mm 60 Black 3

21mm (.82) 21 1/4" 61 Red 4

28mm (1.10) 28 Example
20-10-312
(Standard, 10mm, 1/8", Gray)

36mm (1.42) 36

45mm (1.77) 45

Dimensions

Dia. A B C

8mm .49 (12.5) .28 (7.0) .31 (8.0)

10mm .55 (14.0) .18 (4.5) .39 (10.0)

13mm .61 (15.4) .35 (8.8) .51 (13.0)

15mm .64 (16.3) .26 (6.5) .59 (15.0)

21mm .69 (17.5) .38 (9.5) .82 (21.0)

28mm .72 (18.3) .41 (10.3) 1.10 (28.0)

36mm .73 (18.5) .42 (10.7) 1.42 (36.0)

45mm .75 (19.0) .43 (11.0) 1.77 (45.0)

O/C = Ordering Code Note: 6mm and 1/4" shaft diameters not available with the 8mm and 10mm Knobs. 3mm and 1/8" shaft diameters not available with the 28mm Knobs. 3mm, 1/8" and 4mm shaft diameters not available with the 36mm and 45mm Knobs. Aluminum Knobs are not available with a standard finish. Coaxial Collets available upon request. Please contact Beckwith Electronics for ordering codes.

Wing Knobs

Style O/C - Knob Diameter O/C - Shaft Diameter O/C Color O/C

Wing Knob 22 08mm (.31) 08 3mm 30 Aluminum 0

Wing Matte Finish 28 10mm (.39) 10 1/8" 31 Lt. Gray 1

Wing with a Line 23 13mm (.51) 13 4mm 40 Gray 2

Wing Matte Finish with a Line 29 15mm (.59) 15 6mm 60 Black 3

21mm (.82) 21 1/4" 61 Red 4

28mm (1.10) 28 Example
22-10-312
(Wing, 10mm, 1/8", Gray)

36mm (1.42) 36

Dimensions

Dia. A B C D

8mm .49 (12.5) .28 (7.0) .31 (8.0) .39 (9.8)

10mm .55 (14.0) .20 (5.2) .39 (10.0) .47 (11.9)

13mm .61 (15.4) .35 (8.8) .51 (13.0) .61 (15.6)

15mm .64 (16.3) .26 (6.5) .59 (15.0) .70 (17.7)

21mm .69 (17.5) .38 (9.5) .82 (21.0) .98 (25.0)

28mm .72 (18.3) .41 (10.3) 1.10 (28.0) 1.30 (33.0)

36mm .73 (18.5) .42 (10.7) 1.42 (36.0) 1.67 (42.5)

O/C = Ordering Code Note: 6mm and 1/4" shaft diameters not available with the 8mm and 10mm Knobs. 3mm and 1/8" shaft diameters not available with the 28mm Knobs. 3mm, 1/8" and 4mm shaft diameters not available with the 36mm Knobs. Aluminum Knobs are not available with a standard finish. Coaxial Collets available upon request. Please contact Beckwith Electronics for ordering codes.

Arrow Knobs

Style O/C - Knob Diameter O/C - Shaft Diameter O/C Color O/C

Arrow Knob 18 10mm (.39) 10 3mm 30 Aluminum 0

Arrow Matte Finish 16 15mm (.59) 15 1/8" 31 Lt. Gray 1

Arrow with a Line 19 21mm (.82) 21 4mm 40 Gray 2

Arrow Matte Finish with a Line 17 28mm (1.10) 28 6mm 60 Black 3

1/4" 61 Red 4

Example
18-10-312
(Arrow, 10mm, 1/8", Gray)

Dimensions

Dia. A B C D

10mm .55 (14.0) .20 (5.2) .39 (10.0) .30 (7.5)

15mm .64 (16.3) .26 (6.5) .59 (15.0) .45 (11.5)

21mm .69 (17.5) .38 (9.5) .82 (21.0) .65 (16.5)

28mm .72 (18.3) .41 (10.3) 1.10 (28.0) .87 (22.0)

O/C = Ordering Code Note: 6mm and 1/4" shaft diameters not available with the 10mm Knobs. 3mm, 1/8" and 4mm shaft diameters not available with the 28mm Knobs. Aluminum Knobs are not available with a standard finish. Coaxial Collets available upon request. Please contact Beckwith Electronics for ordering codes.

Knurled Knobs

Style O/C - Knob Diameter O/C - Shaft Diameter O/C Color O/C

Knurled Matte Finish 26 10mm (.39) 10 3mm 30 Lt. Gray 1

Knurled with a Line 27 15mm (.59) 15 1/8" 31 Gray 2

4mm 40 Black 3

6mm 60 Red 4

1/4" 61

Example
26-10-312 BV278
(Knurled Matt Finish, 10mm, 1/8", Gray, Suffix)

Dimensions

Dia. A B C

10mm .54 (13.7) .18 (4.5) .39 (10.0)

15mm .64 (16.3) .26 (6.5) .59 (15.0)

O/C = Ordering Code Note: 6mm and 1/4" shaft diameters not available with the 10mm Knobs. All ordering codes for Knurled Knobs end with BV278. Coaxial Collets available upon request. Please contact Beckwith Electronics for ordering codes.

Lo-Profile Standard Knobs

Style O/C - Knob Diameter O/C - Shaft Diameter O/C Color O/C

Lo-Profile Standard Knob 60 15mm (.59) 15 3mm 30 Lt. Gray 1

Lo-Profile Matte Finish 66 21mm (.82) 21 1/8" 31 Gray 2

Lo-Profile with a Line 61 28mm (1.10) 28 4mm 40 Black 3

Lo-Profile Matte Finish with a Line 67 36mm (1.42) 36 6mm 60 Red 4

1/4" 61

Example
60-15-312 BV 204
(Lo-Profile Standard, 15mm, 1/8", Gray, Suffix)

Dimensions

Dia. A B C D

15mm contact Beckwith Electronics for Specifications

21mm .53 (13.5) .05 (1.2) .82 (21.0) .65 (16.5)

28mm .54 (13.8) .06 (1.5) 1.10 (28.0) .87 (22.0)

36mm .55 (14.0) .07 (1.8) 1.42 (36.0) 1.18 (30.0)

O/C = Ordering Code Note: 3mm and 1/8" shaft diameters not available with the 28mm Knobs. 3mm, 1/8" and 4mm shaft diameters not available with the 36mm Knobs. All cap orders for the Lo-Profile Knobs must include the "BV 204" at the end of the ordering code. Lo-Profile Knobs are 20% shorter in height than the Standard Knobs. Coaxial Collets available upon request. Please contact Beckwith Electronics for ordering codes.

Lo-Profile Wing Knobs

Style O/C - Knob Diameter O/C - Shaft Diameter O/C Color O/C

Lo-Profile Wing Knob 62 15mm (.59) 15 3mm 30 Lt. Gray 1

Lo-Profile Matte Finish 68 21mm (.82) 21 1/8" 31 Gray 2

Lo-Profile with a Line 63 28mm (1.10) 28 4mm 40 Black 3

Lo-Profile Matte Finish with a Line 69 36mm (1.42) 36 6mm 60 Red 4

1/4" 61

Example
62-15-312 BV 204
(Lo-Profile Wing, 15mm, 1/8", Gray, Suffix)

Dimensions

Dia. A B C D

15mm .52 (13.2) .24 (6.2) .59 (15.0) .70 (17.7)

21mm .53 (13.5) .05 (1.2) .82 (21.0) .98 (25.0)

28mm .54 (13.8) .06 (1.5) 1.10 (28.0) 1.3 (33.0)

36mm .55 (14.0) .07 (1.8) 1.42 (36.0) 1.67 (42.5)

O/C = Ordering Code Note: 3mm and 1/8" shaft diameters not available with the 28mm Knobs. 3mm, 1/8" and 4mm shaft diameters not available with the 36mm Knobs. All cap orders for the Lo-Profile Knobs must include the "BV 204" at the end of the ordering code. Lo-Profile Knobs are 20% shorter in height than the Standard Wing Knobs. Coaxial Collets available upon request. Please contact Beckwith Electronics for ordering codes.

Push-On Knobs

Style O/C - Knob Diameter O/C - Shaft Diameter O/C Color O/C

Push-On Knob 76 10mm (.39) 10 3mm 30 Lt. Gray 1

Push-On with a Line 77 15mm (.59) 15 1/8" 31 Black 3

21mm (.82) 21 4mm 40

28mm (1.10) 28 6mm 60

1/4" 61

Example
76-15-313
(Push-On Standard, 15mm, 1/8", Black)

Dimensions

Dia. A B C

10mm .54 (13.8) .33 (8.3) .39 (10.0)

15mm .64 (16.3) .44 (11.2) .59 (15.0)

21mm .69 (17.5) .44 (11.2) .82 (21.0)

28mm .71 (18.0) .44 (11.2) 1.10 (28.0)

O/C = Ordering Code Note: 6mm and 1/4" shaft diameters not available with the 10mm Knobs. 3mm shaft diameters not available with the 15mm Knobs. 3mm and 1/8" shaft diameters not available with the 21mm Knobs. 3mm, 1/4", and 4mm shaft diameters not available with the 26mm Knobs.

Concentric Knobs

Examples O/C

1 Flat Cap 15mm, matte finish, light gray 30-15-101

2 Standard Knob 15mm, matte finish, black, collet 1/8" Dia. 26-15-313

3 Intermediate Cap 21mm, matte finish, light gray 38-21-101

4 Wing Knob 21mm, with line, matte finish, black, coaxial collet 1/4" Dia. 29-21-753

5 Flat Cap 28mm, matte finish, light gray 30-21-101

6 Lo-Profile Standard Knob 15mm, matte finish, black, collet 1/8" Dia. 66-21-373

7 Intermediate Cap 28mm, matte finish, light gray 38-28-101

8 Lo-Profile Wing Knob 28mm, matte finish, black, coaxial collet 1/4" Dia. 68-28-753

O/C = Ordering Code Note: Box Spanner, Slotted Nut and Intermediate Caps available for Concentric Knobs. Concentric Collets available for Concentric Knobs. Please contact Beckwith Electronics for ordering codes.

Knob Accessories: Flat Caps

Style O/C - Cap Size O/C - Finish O/C Color O/C

Flat Cap 30 08mm (.31) 08 Standard 00 Lt. Gray 1

Aluminum Disk 35 10mm (.39) 10 Standard Matte Finish 10 Gray 2

13mm (.51) 13 Standard with a Line 01 Black 3

15mm (.59) 15 Standard Matte Finish with a Line 11 Red 4

21mm (.82) 21 Standard with a Curved Arrow 02 Blue 5

28mm (1.10) 28 Standard Matte Finish with a Curved Arrow 12 Blue 5

36mm (1.42) 36 Standard with an Arrow 03 Yellow 6

45mm (1.77) 45 Standard Matte Finish with an Arrow 13 Green 7

Example
30-21-022
(Flat Cap, 21mm, Curved Arrow, Gray)

Dimensions

Dia. A B C D

8mm .09 (2.3) .03 (0.8) .28 (7.0) .24 (6.0)

10mm .22 (5.5) .04 (1.0) .32 (8.1) .29 (7.4)

13mm .10 (2.5) .05 (1.25) .43 (10.8) .37 (9.4)

15mm .24 (6.0) .05 (1.2) .49 (12.5) .46 (11.6)

21mm .20 (5.0) .06 (1.5) .73 (18.5) .61 (15.4)

28mm .20 (5.0) .06 (1.5) .96 (24.5) .85 (21.6)

36mm .20 (5.0) .08 (2.0) 1.28 (32.5) 1.11 (28.3)

45mm .21 (5.3) .09 (2.2) 1.61 (41.0) 1.48 (37.5)

O/C = Ordering Code Note: Flat caps with an aluminum disk are not available in 8mm, 13mm and 45mm. Caps with an aluminum disk are availabel in Lt. Gray, Gray, Black and red only. All cap orders for Lo-Profile Knobs must include "BV 204" at the end of the ordering code.

Knob Accessories: Peaked Caps

Style O/C - Cap Size O/C - Finish O/C Color O/C

Peaked Cap 31 10mm (.39) 10 Peaked 00 Lt. Gray 1

13mm (.51) 13 Peaked Matte Finish 10 Gray 2

15mm (.59) 15 Peaked with a Pointer 04 Black 3

21mm (.82) 21 Peaked Matte Finish with a Pointer 14 Red 4

28mm (1.10) 28 Blue 5

36mm (1.42) 36 Yellow 6

Green 7

Example
31-10-042
(Peaked Cap, 10mm, with a Pointer, Gray)

Dimensions

Dia. A B C D

10mm .22 (5.5) .04 (1.0) .32 (8.1) .29 (7.4)

13mm .10 (2.5) .06 (1.6) .43 (10.8) .37 (9.4)

15mm .24 (6.0) .07 (1.9) .49 (12.5) .46 (11.6)

21mm .20 (5.0) .11 (2.8) .73 (18.5) .61 (15.4)

28mm .20 (5.0) .13 (3.3) .96 (24.5) .85 (21.6)

36mm .20 (5.0) .18 (4.5) 1.28 (32.5) 1.11 (28.3)

O/C = Ordering Code Note: All cap orders for Lo-Profile Knobs must include "BV 204" at the end of the ordering code.

Knob Accessories: Curved Caps

Style O/C - Cap Size O/C - Finish O/C Color O/C

Curved 32 10mm (.39) 10 Curved 00 Lt. Gray 1

13mm (.51) 13 Curved Matte Finish 10 Gray 2

15mm (.59) 15 Curved with a Line 01 Black 3

21mm (.82) 21 Curved Matte Finish with a Line 11 Red 4

28mm (1.10) 28 Blue 5

36mm (1.42) 36 Yellow 6

45mm (1.77) 45 Green 7

Example
32-10-012
(Curved Cap, 10mm, with a Line, Gray)

Dimensions

Dia. A B C D

10mm .22 (5.5) .02 (0.6) .32 (8.1) .29 (7.4)

13mm .10 (2.5) .05 (1.3) .43 (10.8) .37 (9.4)

15mm .24 (6.0) .05 (1.2) .49 (12.5) .46 (11.6)

21mm .20 (5.0) .05 (1.2) .73 (18.5) .61 (15.4)

28mm .20 (5.0) .05 (1.2) .96 (24.5) .85 (21.6)

36mm .20 (5.0) .06 (1.5) 1.28 (32.5) 1.11 (28.3)

45mm .21 (5.3) .08 (2.0) 1.61 (41.0) 1.48 (37.5)

O/C = Ordering Code Note: All cap orders for Lo-Profile Knobs must include "BV 204" at the end of the ordering code.

Knob Accessories: Arrows

Style O/C - Arrow Size O/C - Finish O/C Color O/C

Arrow 40 8mm (.31) 08 Standard Arrow 00 Lt. Gray 1

10mm (.39) 10 Arrow Matte Finish 10 Gray 2

13mm (.51) 13 Black 3

15mm (.59) 15 Red 4

21mm (.82) 21 Blue 5

28mm (1.10) 28 Yellow 6

36mm (1.42) 36 Green 7

45mm (1.77) 45 Example
40-10-102
(Arrow, 10mm, Arrow Matte Finish, Gray)

Dimensions

Dia. A B C D

8mm .05 (1.3) .28 (7.0) .03 (0.8) .21 (5.4)

10mm .07 (1.8) .31 (8.0) .03 (0.8) .24 (6.0)

13mm .07 (1.9) .37 (9.5) .04 (1.0) .33 (8.5)

15mm .08 (2.0) .41 (10.5) .05 (1.2) .33 (8.5)

21mm .08 (2.0) .58 (14.7) .05 (1.3) .65 (16.5)

28mm .09 (2.3) .73 (18.5) .05 (1.3) .68 (17.3)

36mm .11 (2.7) .91 (23.0) .05 (1.3) 1.02 (26.0)

45mm .11 (2.9) 1.10 (28.0) .05 (1.2) 1.38 (35.0)

O/C = Ordering Code

Knob Accessories: Nut Covers

Style O/C - Cover Size O/C - Finish O/C Color O/C

Nut Cover 48 10mm (.39) 10 Standard Nut Cover 00 Lt. Gray 1

13mm (.51) 13 Standard Matte Finish 10 Gray 2

15mm (.59) 15 Standard with a Line 01 Black 3

Standard Matte Finish with a Line 11 Red 4

Standard with a Line for Wing Knobs 02

Standard Matte Finish w/Line (Wing Knobs) 12

Standard with a Pointer 03

Standard Matte Finish with a Pointer 13

Standard with a Pointer for Wing Knobs 04

Standard Matte Finish with/Pointer (Wing Knobs) 14

Example
48-10-102
(Standard, 10mm, Matte Finish, Gray)

Dimensions

Dia. A B C D

10mm Contact Beckwith Electronics for Specifications

13mm

15mm

O/C = Ordering Code Note: The Nut Cover with a Pointer (Standard and Matte Finish) is not available in 13mm.

Knob Accessories: Arrow Dials

Style O/C - Dial Size O/C - Finish O/C Color O/C

Arrow Dial 45 08mm (.31) 08 Standard Arrow Dial 01 Lt. Gray 1

10mm (.39) 10 Standard Matte Finish 11 Gray 2

13mm (.51) 13 Standard with a Line 02 Black 3

15mm (.59) 15 Standard Matte Finish with a Line 12 Red 4

21mm (.82) 21 Example
45-21-022
(Arrow Dial, 21mm, with a Line, Gray)

28mm (1.10) 28

36mm (1.42) 36

45mm (1.77) 45

Dimensions

Dia. A B C

8mm .05 (1.3) .67 (17.0) .21 (5.4)

10mm .06 (1.5) .83 (21.0) .24 (6.0)

13mm .08 (2.0) .98 (25.0) .32 (8.2)

15mm .12 (3.0) 1.08 (27.5) .36 (9.2)

21mm .98 (2.5) 1.42 (36.0) .65 (16.5)

28mm .11 (2.7) 1.73 (44.0) .71 (18.0)

36mm .12 (2.9) 2.09 (53.0) 1.03 (26.2)

45mm .13 (3.2) 2.56 (65.0) 1.38 (35.0)

O/C = Ordering Code

Knob Accessories: Figure Dials

Style O/C - Dial Size O/C - Finish O/C Color O/C

Figure Dial 46 08mm (.31) 08 Figure Dial with no numbers 00 Clear 0

10mm (.39) 10 Figure Dial: 0-11, 30° 01

13mm (.51) 13 Figure Dial: 1-12, 30° 02

15mm (.59) 15 Figure Dial: 0-9, 36° 03

21mm (.82) 21 Figure Dial: 1-10, 36° 04

28mm (1.10) 28 Figure Dial: 0-5, 60° 05

36mm (1.42) 36 Figure Dial: 1-13, 27°30' 6

45mm (1.77) 45 Figure Dial with a Curved Arrow 10

Figure Dial with a Line 11

Example
46-21-110
(Figure Dial, 21mm, with a Line, Clear)

Dimensions

Dia. A B C

8mm .05 (1.3) .67 (17.0) .21 (5.4)

10mm .06 (1.5) .83 (21.0) .24 (6.0)

13mm .08 (2.0) .98 (25.0) .32 (8.2)

15mm .12 (3.0) 1.08 (27.5) .36 (9.2)

21mm .98 (2.5) 1.42 (36.0) .65 (16.5)

28mm .11 (2.7) 1.73 (44.0) .71 (18.0)

36mm .12 (2.9) 2.09 (53.0) 1.03 (26.2)

45mm .13 (3.2) 2.56 (65.0) 1.38 (35.0)

O/C = Ordering Code

Knob Accessories: Stators

Style O/C - Stator Size O/C - Finish O/C Color O/C

Stator 47 08mm (.31) 08 Stator with a Line 01 Lt. Gray 1

10mm (.39) 10 Stator with a Wide Indicator Line 02 Black 3

13mm (.51) 13 Example
47-21-013
(Stator, 21mm, with a Line, Black)

15mm (.59) 15

21mm (.82) 21

28mm (1.10) 28

36mm (1.42) 36

45mm (1.77) 45

Dimensions

Dia. A B C D

8mm Contact Beckwith Electronics for Specifications

10mm

13mm

15mm

21mm

28mm

36mm

45mm

O/C = Ordering Code Note: The Stator with a Line (O/C 01) is available in Lt. gray only. The Stator with a wide indicator line (O/C 02) is available in Black only.