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Motor differs from the motor in the photo.
MF-9100 Series
Conductive plastic resistor element used (Low slide noise).
Horizontal style control-bar design (Protection against dust).
Durable system which adopted the shaft of the high quality.
All models include a touch sense track.
Last update: 2024.03.05. [Electrical-spec] [Mechanical-spec] [Note] [Dimensions] [Model-number] EU-RoHS

Due to a delay in parts procurement, the color of the main body (label side) has been changed to gray.
This will not affect the use of the product.
If you cannot change the color, please contact our sales department.

Electrical specifications
(initial value)
MF-9100 Series
Products MF-910*-B*-*
Number of circuits
Type of output law
Linear taper
Circuit method Potentiometer circuit
Total resistance (1-3) 10kohm,   5kohm
Total resistance tolerance ±20%
Absolute linearity (Linear taper) ±5% (The travel is divided into 10 sections and 11 positions are measured.)
Residual voltage (1-2), (2-3)
(Linear taper)
10mV or less
Residual resistance (1-2), (2-3)
(Linear taper)
30ohm or less  (Reference values)
Touch sense track contact
20ohm or less (Between terminal 4 and Control-bar.)
Voltage proof 1 Min. at AC500V
Insulation resistance 50Mohm or more at DC500V
Max rating 0.2W (Linear taper),  0.1W (Other taper)
Maximum input voltage DC30V or less
Sliding noise level 47mV or less (by JIS C 6443)
Sliding life 100,000 Cycles Min. (18cycles/min, Sliding noise level: Less than 100mV)
Drive motor data
DC12V Coreless motor : Input voltage: DC12V, Stall current: 0.55A or less
               [12CL-3035 (Custom-made for TKD.) : Orbray Co., Ltd.]

Mechanical specifications
(initial value)
MF-9100 Series
Travel (Stroke) length 100mm ±0.5mm
Operating force 0.1 to 0.3N
Strength Nut-Attached 100Ncm
Attached parts M3 screw (Length: Panel thickness + 3mm)
Stopper strength 40N
Push-pull strength 40N
Alignment to the center ±0.5mm (State not to pressure control-bar, Measurement position: Mounting surface)

General specifications MF-9100 Series
Temperature range -10 to +50 degrees C (Operating), -15 to +60 degrees C (Storage)
Relative humidity 80%RH (No condensation)

* Solder heat resistance: 350deg C max, 5sec max, 2 times. (Manual soldering only)
* Please take care during soldering that the smoke from the solder does not flow inside a fader.
* If the flux sticks to a resistor board, it may cause a trouble with the fader.
* Move to one end in Control-bar on the occasion of knob wearing, and can break into it slowly.
* It is highly recommended that the fault tolerant system is to be set up in the big situation like the live broadcast.
* This product is designed on the assumption of the horizontal use.
* The enough operational testing is highly recommended for the slant or the vertical use to prevent the unexpected operation.
* Replacing it from other brands tests it enough, and please consider.
* Click here for the type without a motor. >>
* It is recommended that motor leads be shortened and twisted.
  The J12 motor may be replaced with a thicker wire in the middle.
  Consider not to interfere with other motor leads.
* Color may vary slightly due to body material.
* Due to the way the body is processed, there may be some rubbing on the folded parts.
* A simple resistor maintenance procedure is presented. Please try it when you need it.
  However, we do not guarantee the product after this work.
* Please provide your own equipment.

    >>  1st step ,  2nd step ,  3rd step

Dimensions - MF-910*-*-J12
MF-9101-B**K-J12   (Linear taper)

Dimensions - Panel cut out

Dimensions - Terminations

Model number
MF-910 1 - B 10K - J12
*1 *2   *3 *4   *5

*1 Product number MF-910 : MF-9100 Series
*2 Control-bar length: Length (Bracket height) 1 : 9mm (5mm)
*3 Output law B   : Linear taper + Touch sense track
Total resistance
10K : 10kohm
5K   : 5kohm
*5 DC Motor type J12  : DC12V Coreless

Products No.
( X: Standard model)
Travel Output
Motor Mounting
Control-bar length
(Bracket height)
MF-9101-B10K-J12 X 100mm Linear - 10kohm - With DC12V
M3 9mm (5mm)
MF-9101-B5K-J12   100mm Linear - 5kohm - With DC12V
M3 9mm (5mm)

Update list
2024.03.05. Specification Audio-taper and AP-taper removed.     Specification DC8V-motor removed.     Chassis ground terminal removed.
2023.12.19. Addition of maximum input voltage specification.     Change in maximum ratings.
2023.08.24. Add maintenance information.
2023.08.04. Added note on motor leads and body material.
2023.07.20. Slight correction of specification notations.
2023.06.16. Additional 3D data (step format).
2023.01.01. Change of company name. [Adamant Namiki Precision Jewel Co., Ltd. → Orbray Co., Ltd.]
2022.11.01. First edition