SUHNER MINIfix 25 R Gebrauchsanleitung Seite 4

Read the enclosed safety instructions, appendix 39 230 ..!
1. MINIfix: Technical data
2. Flexible shaft
3. Start-up procedures
3.1 Set the operating speed
3.2 Connect the flexible shaft
3.3 Connect toolholders
3.4 Start-up Minifix 25R
3.5 Start-up Minifix 28
4. Accessories: FH4, WI4
1. MINIfix
see Fig. A
Machine elements
A1 On / Off switch
A2 Speed selector
A3 Speed indicator label
Technical data
Universal, single-phase AC motor
Minifix
Power input:
Power output:
Weight without shaft:
Insulation protection class
Voltage (see spare parts list)
Soft start for smooth starting
Cut-out carbon brushes
Overload protection switch
Variable speed positions ( 11....25'000 RPM) 6 - (28'000 RPM)
Tacho speed control
Sound pressure level CEN/TC 255 N
Flexible shaft connection
For flexible shaft types:
(see catalogue)
Vibration values ISO/DIS 8662-4
Toolholder type: Test plate:
FH4 ø 25 x 10
WI4 ø 25 x 10
Maintenance
• Store machine in a dry, clean place.
• Cooling air ports must be kept free of obstructions.
• Unplug before performing any maintenance work.
• Change of carbon brushes and wear/tear parts: Your SUHNER
Service Centre can perform this work quickly and efficiently.
• Check connecting cables regularly. Damaged cables must be
replaced under all circumstances.
• Repairs may only be performed by a qualified electrician Acci-
dents could otherwise occur for the operator.
• Complaints can only be accepted if the machine is returned
unopened.
2. Flexible shaft
see Fig. B
Machine elements
B1 M10 threaded coupling
B2 DIN 10 casing coupler
B3 Spring-loaded pin
B4 Casing
Type:
NA4x1250 DIN10/G16, permissible operating speed 40'000 RPM
Maintenance
• Store flexible shaft in a dry, clean place.
4
GB
A4 Motor shaft
A5 Motor connection
Type 25 R 28
500 300 W
300 200 W
1.65 1,65 kg
I I I I
Various Various
yes -
2 2
yes -
yes -
73 77 dB (A)
DIN 10 = M10 see A4
NA 4 DIN 10 / G16 see B2 B8
Measured value: Speed selector
position:
3,5 m/s 2 28'000 RPM
2
< 2,5 m/s 15'000 RPM
B5 Core
B6 Driving pin
B7 Spring-loaded pin
B8 G16 casing coupler
• If used daily: Re-grease once monthly. Remove core B5 from
casing B4. Remove shaft grease. Lightly apply SUHNER shaft
grease to core B5.Order No. for 1 kg can: 904 832.
• New shafts or newly greased shafts require running-in.
• Clean casing coupler B2 B8 before use. Worn casing couplers
lead to increased vibration and noise. The casing B4 must then
be replaced (see spare parts list).
3. Set the operating speed
1
Attention: General
Do not change pre-selected speed while tool is running and
has working tools mounted. Only change speed when machine
is switched off. Unplug power supply.
Typ MINIfix 25R see Fig. A
• Ensure that the desired speed A2 is permissible for the tool
and toolholder used.
• Speed indicator label A3 shows all 6 positions.
• Turn speed selector A2 to required speed position.
Speed selector position
Typ MINIfix 25R
3. Connect the flexible shaft
2
1. Insert pin in retention hole.
2. Slightly withdraw threaded coupling B1 from casing coupler B2.
3. Insert second pin through transverse hole in threaded coupling
B1 and
4. Fasten tightly onto the motor shaft A4.
5. Remove pins.
6. Insert casing coupler B2 completely into motor connection A5.
7. Depress spring-loaded pin B3 and completely insert casing
coupler B2.
8. Spring-loaded pin B3 must click audibly into place in the retenti-
on hole. Ensure that spring-loaded pin B3 has locked firmly into
place. If necessary, move/rotate casing coupler B2 until spring-
loaded pin B3 clicks into place.
3. Connect toolholders
3 (accessory) see Fig. C
1. Insert casing coupler B8 into tool connection.
2. Depress spring-loaded pin B7 and completely insert casing
coupler B8.
3. Spring-loaded pin B7 must click audibly into place in retention
hole C1. Ensure that spring-loaded pin B7 has locked firmly into
place. If necessary, move/rotate casing coupler B8 until spring-
loaded pin B7 clicks into place.
Note: Right angle toolholder WI4 can be rotated on the casing
coupler for easier handling.
3. Operation conditions and instructions for MINIfix 25R
4
This tool is equipped with an electronic variable speed tachometer
selector and an overload cut-out switch, which operates as fol-
lows:
1. Soft start
2. With increased work pressure more current is drawn,
whichb virtually holds speed at a constant rpm.
3. If the motor is overloaded, the electronic cuts off the power.
In this event switch at once to OFF position, restart right away
to assure cooling effect in no load mode. Repeated automatic
cut off indicates, tool is being overloaded.
4. Caution: Electrical surges and high frequency interference
may cause RPM fluctuations up to 30% which will disappear
as soon as power source conditions stabilize. Due to
6 = 25'000 RPM
5 = 22'000 RPM
4 = 19'000 RPM
3 = 16'000 RPM
2 = 13'000 RPM
1 = 11'000 RPM
- = 28'000 RPM
to the motor see Figs. A + B