Sorotec Hobby-Line 4530 User manual

SOROTEC GmbH
Withig 12
77836 Rheinmünster
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Web: www.sorotec.de
Assembly instructions
CNC portal milling machine kit
Hobby-Line 4530
Support for build and operation also in the user forum: www.hobbyline.info
Version 1.2.1
MPF.HL1.4530.B

Page 2/24
Assembly instructions
Hobby-Line 4530 kit
www.sorotec.de V 1.2.1
Technical specications
Hobby-Line 4530 6045 7545 10560
Travel X: 300 mm
Y: 450 mm
Z: 140 mm
X: 460 mm
Y: 600 mm
Z: 140 mm
X: 460 mm
Y: 750 mm
Z: 140 mm
X: 610 mm
Y: 1050 mm
Z: 140 mm
Clearance
under portal
240 mm 240 mm 240 mm 240 mm
Clamping area X: 355 mm
Y: 610 mm X: 515 mm Y: 760 mm X: 515 mm Y: 910 mm X: 665 mm Y: 1210 mm
Outer dimensions L: 670 mm
B: 550 mm
H: 650 mm
L: 820 mm
B: 680 mm
H: 650 mm
L: 970 mm
B: 680 mm
H: 650 mm
L: 1270 mm
B: 860 mm
H: 650 mm
Ball screw spindles
Tolerance class T07 X: 16 x 10 mm Y: 16 x 10 mm
Z: 12 x 4 mm
X: 16 x 10 mm
Y: 16 x 10 mm
Z: 12 x 4 mm
X: 16 x 10 mm
Y: 16 x 10 mm
Z: 12 x 4 mm
X: 16 x 10 mm
Y: 16 x 10 mm
Z: 12 x 4 mm
Weight without
accessories approx. 18 kg approx. 21 kg approx. 28 kg approx. 36 kg
© 2019 Sorotec GmbH
Reproduction, duplication or translation, also in extracts, without the written approval of
Sorotec GmbH is not permitted. All rights under the Copyright Act remain the
Sorotec GmbH expressly reserved.
Technical changes reserved.
Made in Germany.

Page 3/24
Assembly instructions
Hobby-Line 4530 kit
www.sorotec.de V 1.2.1
Introduction
Congratulations on the purchase of our kit for a Hob-
by-Line CNC portal milling machine. We recommend
reading through these instructions completely before
assembly and then assembling the kit step by step
as described.
Required tools
When designing the Hobby Line, care was taken to
ensure that no special tools are required for assem-
bly. However, common hand tools such as wren-
ches,Allen keys, screwdrivers, plastic hammers, etc.
should be available. A work surface that is as at as
possible and the size of the base frame is also a pre-
requisite for a successful construction.
Required accessories
Three stepper or servo motors the size of NEMA 23
for the axis drives. The motors are an integral part of
the design and indispensable for the sensible cons-
truction of the portal milling machine. If not yet procu-
red, you will nd suitable motors in the Sorotec shop:
http://www.sorotec.de/shop/index.php
Optional accessories
The fully assembled machine can be supplemented
and adapted to your requirements with optional ac-
cessories. In the Sorotec shop you will nd:
•Milling spindles
•Electric mounting kit
•Control electronics
•Control software
•T-slot plate
•Vacuum table
•Minimum quantity lubrication
•Vacuum chip disposal
•Enclosure
Attention!
Only carry out the work if you are familiar with the ne-
cessary actions and do have suitable tools available.
Sorotec GmbH assumes no responsibility or liability
for damage to property or personal injury that occurs
during the assembly or operation of the CNC portal
milling machine.
General information
Please assemble the kit as carefully and precisely
as possible - the accuracy of the nished machine
not only depends on the quality of the components
supplied, but also to a large extent on the correct as-
sembly and precise alignment. All components must
be checked for burrs before assembly and reworked
if necessary.

Page 4/24
Assembly instructions
Hobby-Line 4530 kit
www.sorotec.de V 1.2.1
Scope of delivery
Illustration Description Number
ball screw 16 x 10,
length 449 mm, with
recirculating ball nut 1
guide prole
Sapa 458 mm 1
precision shaft
Ø 6h6 457 mm 2
face plate
xed bearing side 1
face plate
loose bearing side 1
belt cover 1
toothed belt wheel 3M,
32 teeth, W 9 mm, 6
mm hole 2
toothed belt wheel 3M,
32 teeth, W 9 mm, 6.35
mm hole 1
timing belt 3M, 1125
mm, 375 teeth, W 9
mm
1
rubber sealing prole 1
1
2
3
4
5
8
Illustration Description Number
ball screw 16 x 10,
length 658 mm, with
recirculating ball nut 2
guide prole
Sapa 618 mm 2
precision shaft
Ø 6h6 617 mm 4
cover prole
Sapa 613,5 mm 2
ball screw 12 x 4,
length 210 mm, with
recirculating ball nut 1
guide prole
Sapa 308 mm 1
precision shaft
Ø 6h6 307 mm 2
11
12
13
14
15
16
17
6
7
9
10

Page 5/24
Assembly instructions
Hobby-Line 4530 kit
www.sorotec.de V 1.2.1
Illustration Description Number
motor plate Z 1
end plate Z 1
right portal plate
(loose bearing side) 1
left portal plate
(driving side) 1
sled 1
nut block table / portal
for 16 spindle 3
nut block Z axis
for 12 spindle 1
reference switch
bracket X and Y 2
reference switch
bracket X 1
18
19
20
21
22
23
24
25
26
Illustration Description Number
drag chain angle
for portal 1
bracket for
connector 1
bracket angled
for plug connection 2
reference switch
casing 3
reference switch 3
drag chain
1 m 18 x 25 mm 3
connector kit for
drag chain 18 x 25 mm 2
mounting bracket for
drag chain 1
cable tie block 6-20 6
reference angle Z 1
locating screw DIN
7379
M6 x 25 1
adjusting washer DIN
988
8 x 14 x 0,2 mm 2
miniature
ange ball bearing
8 x 22 x 7 mm 2
27
28
29
30
RS
31
32
33
34
35
36
37
38

Page 6/24
Assembly instructions
Hobby-Line 4530 kit
www.sorotec.de V 1.2.1
Illustration Description Number
xed bearing
retaining plate 4 mm 2
xed bearing
spacer plate 2 mm 2
xed bearing seat 2
xed bearing spacer
sleeve 8 x 12 x 5 mm 2
coupling 2
min.-ball bearing 688
2RS 8 x 16 x 5 mm 4
min.-ball bearing R4
2RS 6,35 x 15,875 x
4,978 mm 2
sleeve bearing
M250 Iglidur 3
adjusting washer
DIN 988
10 x 16 x 1,2 mm 2
centric
roller guide 8
eccentric
roller guide 8
castor
LFR50/8-6.2RS 16
39
40
41
42
43
44
45
46
47
48
49
50
Illustration Description Number
at nut M8 x 0,75
for exc. roller guide
Fine thread!
8
adjusting washer DIN
988
8 x 14 x 1 mm 48
table prole
20 x 20 mm
Typ B, Länge 617 mm 2
table prole
20 x 20 mm
Typ B, Länge 322 mm 4
emergency stop 30 mm
1-pole / bore 16 mm 1
washer Ø M8
galvanized, large 2
washer Ø M6
galvanized, large 1 4
washer Ø M4
galvanized, large 3
nut DIN 934
59 M4
60 M6 3
4
DIN 985 M6,
self-locking nut 1
DIN 985 M8 x 1,
self-locking nut
Fine thread!
2
DIN 985 M8,
self-locking nut 16
angle 5 20 x 20 mm 12
51
52
53
54
55
59
57
58
61
62
63
64

Page 7/24
Assembly instructions
Hobby-Line 4530 kit
www.sorotec.de V 1.2.1
Illustration Description Number
set screw
DIN 913 M5 x 8 8
hammer nut
Nut 6, M4 5 16
hammer nut
Nut 6, M5 12 40
cylinder head screw
Allen low DIN 7984
M5 x 6 24
cylinder head screw
Allen DIN 912 M4 x 20 10
countersunk screw
Allen
DIN 7991
S1 M4 x 10
S2 M4 x 16
S3 M5 x 10
S4 M5 x 20
5
2
6
16
65
H1
H2
Z1
Z2
Illustration Description Number
grease nipple
M6 45° square 3
grease nipple M5 45° 1
rubber foot 4
sliding block M6 4
at headed screw
Allen
DIN 7380
F1 M3 x 14
F2 M4 x 8
F3 M4 x 10
F4 M4 x 12
F5 M4 x 16
F6 M4 x 25
F7 M4 x 35
F8 M5 x 8
F9 M5 x 14
G1 M5 x 20
G2 M6 x 16
G3 M6 x 20
G4 M6 x 30
6
9
14
6
6
4
2
6
2
12
6
22
2
mounting aid
tube
Ø i 8 mm 1
66
67
68
69
MH

Page 8/24
Assembly instructions
Hobby-Line 4530 kit
www.sorotec.de V 1.2.1
Pre-assembly
Portal plates
For this construction phase you need: #
1 right portal plate 20
1 left portal plate 21
1 sleeve bearing 46
8 castor 50
4 centric roller guide 48
4 eccentric roller guide 49
8 self-locking nut M8 63
4at nut M8 x 0,75
Fine thread!
51
24 adjusting washer 8 x 14 x 1 mm 52 Fig. 1:Assembly of guide rollers for the portal plate
Fig. 2: Mount the hexagon side of the eccentrics towards the
outside of the portal cheek.
48
20
50
63 52
52
49
52
51
4848
20
21
49
49
•Press the sleeve bearing 46 into the hole on
the right portal cheek (see Fig. 17 on page 15).
Assemble the roller guides of the portal cheeks as
shown in pictures 1 and 2. Pay attention to the cor-
rect installation position of the guide bolts.
•Install the centric roller guides 48 with the
hexagon head on the inside into the lower holes
of the portal plates 20 21 . Tighten the screw
connections well.
•Install the eccentric roller guides 49 with the
hexagon socket on the outside in the upper
holes of the portal plates. Tighten the screw
connections well on the roller side, but only
loosely hand-tight on the opposite side - later
the guidance of the Y-axis is set here.

Page 9/24
Assembly instructions
Hobby-Line 4530 kit
www.sorotec.de V 1.2.1
Fig. 4: Assembly of castors on the X axis
Fig. 5: Assembly of castors Y-axis
Fig. 6: Fully assembled X and Z castor guide
52
22
52
51 50 52
60
48
60
22
52
51 50 52
63
48
63
51
52
50
48 50
63
49 52
22
63 52
52
Sled
For this construction phase you need: #
1 sled 22
8 castor 50
4 centric roller guide 48
4 eccentric roller guide 49
8 self-locking nut M8 63
4at nut M8 x 0,75
Fine thread!
51
24 adjusting washer 8 x 14 x 1 mm 52
Assemble the roller guides of the carriage as shown
in pictures 3 to 6. Pay attention again to the correct
installation position of the guide bolts.
•Install centric roller guides 48 in holes X1 and
X2 of the sled 22 . Tighten the screw connection
well.
•Install eccentric roller guides 49 in the holes X3
and X4 of the sled. Only pull the screw
connections loosely by hand.
•Now proceed accordingly for the rollers on the
opposite side: centric roller guides in holes Z1
and Z2, eccentrics in holes Z3 and Z4.
Fig. 3: The holes for the guides in the X and Z direction
22

Page 10/24
Assembly instructions
Hobby-Line 4530 kit
www.sorotec.de V 1.2.1
Sides of the table
For this construction phase you need: #
2guide prole 618 mm 12
4 precision shaft 617 mm 13
2table prole 617 mm 53
8 cylinder head screw M4 x 20 Z2
8 hammer nut M4 H1
sealing prole 10
Fig. 7: Lateral guide prole with attachments
12
13
53
10
Prepare the table sides:
•Load the cross holes of the table proles 53
with cylinder screws Z2 and screw on one
hammer nut H1 a turn or two.
•Place the table proles 12 with the hammer
nuts in the upper side groove of the guide
proles (see gure 7). Align to center: Protrusion
must be avoided!
•Press the table prole downwards and tighten
the screw connection.
•Guide the sealing prole 10 into the
designated groove of the guide prole (see
picture 7) and cut it ush with a sharp knife.
•Push the precision shafts 13 , on which the
castors will run later, into the corresponding
channels of the guide proles. Temporarily
secure the shafts with a little tape to prevent
them from slipping out.
Spindles
Y-axis
For this construction phase you need: #
2 ball screw 16 x 10 mm, L 658 mm 11
2xed bearing retaining plate 4 mm 39
2xed bearing spacer plate 2 mm 40
2xed bearing seat 41
2xed bearing spacer sleeve 42
4 ball bearing 8 x 16 x 5 mm 44
2 adjusting washer 10 x 16 x 1,2 mm 47
2 self-locking nut M8 x 1,
Fine thread!
62
2 grease nipple M6 45° 66
2 nut block 23
8at headed screw M5 x 20 G1
1 mounting aid MH
4at headed screw M6 x 16 G2
pre-assembled portal plates
Attention!
Never turn the spindle nut from a ball screw! The
spindle nut cannot be reassembled with common
tools. A ball screw without a spindle nut has been
destroyed and must be replaced with a new part.
Fig. 8: Mounting the xed bearings on the Y spindles
39
42
62
40
47
41
44
23
11
66

Page 11/24
Assembly instructions
Hobby-Line 4530 kit
www.sorotec.de V 1.2.1
Prepare the Y axis spindles:
•First, screw a grease nipple 66 onto each
spindle nut.
•Lubricate the spindle nuts with a grease gun
and remove excess grease with a rag.
•Mount the nut blocks 23 on the spindle nuts
with four at headed screws G1 each.
•Carefully clamp the spindle between two
wooden blocks or plastic jaws in a vice.
•Now assemble the parts of the xed bearings in
the order shown in Figure 8. Use the assembly
aid MH and a plastic hammer to push the ball
bearings 44 onto the t of the spindle.
Attention: Only press the ball bearing onto the
inner ring!
•To adjust the axial play, tighten the shaft nut
62 until the xed bearing unit can only be
turned around the ball screw with di󰀩culty. Then
carefully loosen the shaft nut a little (approx. 5°)
until the ball screw can easily be turned again.
•Finally, screw the spindles with at headed
screws G2 to the nut blocks with the portal
plates. Do not tighten the screws.
Note:
The threads of grease nipples tear o easily.
Turn the nipples back a full turn now and then
when screwing them in.
n. Fig. 9: Grease nipples and nut blocks on the spindles of the
Y axis.
Fig. 10: Right portal plate with mounted spindle

Page 12/24
Assembly instructions
Hobby-Line 4530 kit
www.sorotec.de V 1.2.1
X-axis
For this construction phase you need: #
1 ball screw 16 x 10 mm, L 449 mm 1
1 grease nipple M6 90° 66
1 nut block 23
4at headed screw M5 x 20 G1
2at headed screw M6 x 16 G2
pre-assembled sled
Prepare the X axis spindle:
•Screw the grease nipple 66 onto the spindle
nut.
•Lubricate the spindle nuts with a grease gun
and remove excess grease with a rag.
•Mount the nut block with the at headed
screws G1 .
•Finally screw the spindle to the nut block in the
milled pocket of the slide using at-head screws
G2 . Do not tighten the screws.
Fig. 11: Sled with the X-spindle installed
Z-axis
For this construction phase you need: #
1 ball screw 12 x 4 mm, L 210 mm 15
1 grease nipple M5 45° 67
1 nut block 24
6at headed screw M4 x 16 F5
pre-assembled sled with X-axis
Prepare the Y axis spindle:
•Screw the grease nipple 67 onto the spindle
nut.
•Lubricate the spindle nuts with a grease gun
and remove excess grease with a rag.
•Mount the nut block with the at headed
screws F5 .
•Finally screw the spindle with at-head screws
F5 on the nut block on the slide, as shown in
Fig. 12. Tighten the screws.
Fig. 12: Sled with the Z-spindle installed
15
67
24

Page 13/24
Assembly instructions
Hobby-Line 4530 kit
www.sorotec.de V 1.2.1
Fig. 13: Basic table structure
Fig. 14: Installation of rubber foot
46
68
68
5
57
60
68
69
Final assembly
Table
For this construction phase you need: #
1face plate xed bearing side 4
1 face plate loose bearing side 5
2 sleeve bearing 46
8at headed screw M6 x 20 G3
4at headed screw M4 x 25 F6
4 rubber foot 68
4 washer Ø M6 57
4 nut M6 60
4 sliding block M6 69
pre-assembled table sides
pre-assembled portal plates
Assemble the table as follows:
•Press the two sleeve bearings 46 into the face
plate 5.
•Use the at-head screws G3 to screw the two
pre-assembled table sides to the face plate 5,
as shown in Fig. 13. Do not tighten the screws.
•Complete the rubber feet 68 with an M6 nut
60 , a washer 57 and a sliding block 69 . Insert
the feet with the sliding block into the lower
longitudinal groove of the side proles and
screw the feet tight as shown in Fig. 14.
Continued on next page.

Page 14/24
Assembly instructions
Hobby-Line 4530 kit
www.sorotec.de V 1.2.1
Note:
The exact setting of the roller guide will be
done later.
Fig.15: Installation of the right portal cheek
Figure 16: Bolted xed bearing of the right Y-spindle
•Remove the adhesive tape with which you
secured the guide rails (precision shafts 13 ) in
the table sides against slipping out.
•Trace the right portal plate into the guide on
the right side of the table, as shown in Fig. 15.
To do this, loosen the screw connections of the
eccentrics if necessary and turn them with an
Allen key until the rollers run tension-free on the
rails.
•Insert the front end of the spindle into the sleeve
bearing pressed into the face plate.
•Proceed in the same way with the left portal
plate.
Fixed bearing side
•Use at-head screws G3 to mount the rear end
face plate 4on the table sides. Do not tighten
the screws.
•Use at-head F6 screws to screw the xed
bearings of the Y-spindles to the rear face plate.
Do not tighten the screws.

Page 15/24
Assembly instructions
Hobby-Line 4530 kit
www.sorotec.de V 1.2.1
Portal
For this construction phase you need: #
1guide prole 458 mm 2
2 precision shaft 457 mm 3
4at headed screw M6 x 20 G3
pre-assembled table sled
Assemble the portal as follows:
•The Z spindle can be rotated out of the spindle
nut by its own weight. Secure the spindle
against unintentional unscrewing before
installation.
•Push the precision shafts 3into the
corresponding channels of the guide prole 2
as shown in Fig. 7 (the sealing prole also
shown there is omitted on the portal).
•Trace the sled into the guide prole. To do this,
loosen the screw connections of the eccentrics
again if necessary and turn them with an Allen
key until the rollers run tension-free on the rails.
Axis drive X
For this construction phase you need: #
1 coupling 43
1 ball bearing 45
1 bracket for connector 28
4at headed screw M4 x 10 F3
1 Stepper or servo motor NEMA 23
Assemble the drive for the X axis as follows:
•Push the ball bearing 45 onto the motor axle as
far as it will go.
Note:
To push the bearing 45 onto the motor axis, you
can use the coupling 43 and a plastic hammer
as an assembly aid.
•Slide the coupling with the at side rst onto the
spindle and screw the grub screw rmly onto the
at end of the spindle.
Fig. 17: Portal group consisting of guide prole and sled with
roller guidance and spindles for X and Z
Note:
The following step is easier to do with a helper.
•Use at-head screws G3 to assemble the
construction consisting of the guide prole and
sled between the portal plates, as shown in Fig.
17. Insert the right end of the X spindle into the
sleeve bearing. Do not tighten the screws.
46
2
Fig. 18: Assembly of the drive for the X axis
•Attach the motor with the cable connection
pointing to the rear. Bolt down the motor
together with the retaining plate for the plug
connection using at-head screws F3 .
•For the time being, do not tighten the setscrew
on the motor side of the clutch.
28
1
43
45
NEMA 23

Page 16/24
Assembly instructions
Hobby-Line 4530 kit
www.sorotec.de V 1.2.1
Tightening the basic screw connec-
tion and adjusting the castors
Your portal milling machine has now been set up so
far that all screw connections can be tightened and
the castors on the X and Y axes can be adjusted. To
do this, proceed as follows:
X-axis
•Push the sled all the way to the left by hand
(motor side of the spindle).
Note:
If the sled is very dicult or impossible to move,
check whether two or more of the motor cables
are short-circuited. In this case, the motor can
also act as a strong brake without external wiring.
•Push the guide prole forwards and downwards
while tightening the connecting screws on the
portal plates.
•Loosen the nuts of the eccentric roller guides.
•Now set the guide rollers one after the other.
To do this, turn the eccentric with an Allen key
until the roller lies against the rail. Continue
to turn the eccentric until you can feel a clear
resistance - but never more than 5 degrees after
the roller is in contact.
•Tighten the nut of the set roller guide and repeat
the setting for the second roller.
•Tighten the set screw on the motor side of the
coupling on the X motor.
•Tighten the screw connection between the sled
and the nut block of the X axis.
Y-axis
•Push the portal all the way back by hand (xed
bearing side of the Y-spindles).
•Press the sides of the table inwards and
downwards while tightening the connecting
screws on the face plates.
•Set the roller guides of the portal plates as
described for the rollers on the X axis.
•Tighten the screws of the xed bearings on the
rear face plate.
•Tighten the screw connections between the
portal plates and the nut blocks of the Y
spindles.
Fig. 19: Adjusting the guide rollers

Page 17/24
Assembly instructions
Hobby-Line 4530 kit
www.sorotec.de V 1.2.1
Axis drive Y
For this construction phase you need: #
2 toothed belt wheel 6 mm hole 7
1 toothed belt wheel 6.35 mm hole 8
1 timing belt 9
1 locating screw M6 x 25 36
2 adjusting washer 8 x 14 x 0,2 mm 37
2ange ball bearing 38
2 washer M8 56
1 washer M6 57
1 self-locking nut M6 61
4at headed screw M4 x 10 F3
1 bracket angled for plug connection 29
2at headed screw M4 x 8 F2
1 Stepper or servo motor NEMA 23
Assemble the drive for the Y axis as follows:
Fig. 20: Y motor and holding plate for plug connection
Fig. 21: Mounting the tension pulley (surrounding compo-
nents are not shown for clarity)
Fig. 22: Structure of the timing belt drive
F3 F2
NEMA 23
29
37
36
57
38
61
56
77
8
9
•Use at-head screws F3 to bolt the motor into
the hole provided in the rear end plate.
•Fasten the holding plate for the plug
connection 29 with at-head screws F2 , as
shown in Fig. 20.
•Assemble the tension pulley as shown in Fig.
21. Do not tighten the screw connection yet.
•Place the toothed belt wheels 7with the
clamping side facing outwards on the Y spindles
and tighten the clamping screws.
•Place the toothed belt wheel 8on the motor
shaft with the clamping side facing inwards and
tighten the clamping.
•Put on the timing belt 9as shown in Fig. 22.
•Tighten the timing belt with the tension pulley
and tighten the screw connection of the pulley.
Note:
The belt tension is set correctly if:
•on the one hand there is no sag visible and
•on the other hand the free rotation is not
hindered.

Page 18/24
Assembly instructions
Hobby-Line 4530 kit
www.sorotec.de V 1.2.1
Guidance Z-axis
For this construction phase you need: #
1guide prole 308 mm 16
2 precision shaft 307 17
1 motor plate Z 18
1 end plate Z 19
2at headed screw M6 x 20 G3
2at headed screw M6 x 30 G4
Assemble the Z-guidance as follows:
Fig. 23: The parts of the Z-axis guide
16
18
19
•Use at-head screws G4 to mount the end plate
19 on the guide prole 16 . Tighten the screws.
•Push the precision shafts 17 into the
corresponding channels of the guide prole.
•Trace the guide prole into the Z-roller guidance
from below.
•Mount the motor plate 18 on the guide prole
with at-head screws G3 . Do not tighten the
screws. Fig. 33 on page 20 alternatively shows
the installation of the plate in the reverse
position in order to achieve a space-saving
course of the drag chain connected here.
Axis drive Z
For this construction phase you need: #
1 coupling 43
1 ball bearing 45
4at headed screw M4 x 10 F3
1 bracket angled for plug connection 29
2at headed screw M4 x 8 F2
1 Stepper or servo motor NEMA 23
Assemble the drive for the Z axis as follows:
•Push the ball bearing 45 onto the motor axle as
far as it will go.
Note:
To push the bearing 45 onto the motor axis, you
can use the coupling 43 and a plastic hammer
as an assembly aid.
•Slide the coupling with the at side rst onto the
spindle and screw the grub screw rmly onto the
at end of the spindle.
•Attach the motor with the cable connection
pointing to the right. Screw the motor with at
head screws F3 . Tighten the second set screw
of the coupling.
•Set the rollers of the Z guide as described on
page 15 for the X axis.
•Tighten the screw connections on the motor
plate.
•Fasten the holding plate for the plug connection
with at-head screws F2 .
Fig. 24: Assembly of the drive for the Z axis
NEMA 23
45
43
15
29

Page 19/24
Assembly instructions
Hobby-Line 4530 kit
www.sorotec.de V 1.2.1
Rail Locking
For this construction phase you need: #
8 set screw 65
The precision shafts that serve as rails for the roller
guides must be secured against slipping. To do this,
screw the set screws 65 into the corresponding
holes:
•left and right in the rear face plate
•in the left portal plate (engine side)
•in the motor plate of the Z guide
Note:
Tighten the grub screws carefully hand-tight!
Excessive preload on the rails leads to crackling
noises when moving the axes. Fig. 25: Threaded holes for the rail lock
65
65
65
65
65
65 65
65
Side covers
For this construction phase you need: #
2cover prole 14
1sealing prole 10
8at headed screw M6 x 20 G3
Assemble the side covers as follows:
•Guide the sealing prole 10 into the designated
groove of the cover prole and cut it ush with a
sharp knife.
•Mount the cover proles with at headed
screws G3 . The cover proles are deliberately
one millimeter shorter than the table proles for
better mobility. Do not overtighten the screws to
avoid bending the face plates.
Fig. 26: For maintenance of the spindles, the side covers can
be easily opened after removing the upper screws.
Attachment parts
Emergency switch
For this construction phase you need: #
1 Emergency switch 30 mm 55
•Mount the emergency stop switch in the hole
provided in the front face plate, as shown in
Fig. 27. Fig. 27: Emergency stop switch, view from behind

Page 20/24
Assembly instructions
Hobby-Line 4530 kit
www.sorotec.de V 1.2.1
Reference switches
For this construction phase you need: #
3 reference switch casing 30
3 reference switches RS
2 bracket X / Y 25
1 bracket Z 26
1 reference angle Z 35
2at headed screw M4 x 8 F2
6at headed screw M3 x 14 F1
6at headed screw M5 x 8 F8
6 hammer nut M5 H2
The reference switches RS , the housings 30 and
the holding plates 25 / 26 together form a unit.
•Mount the housing 30 , switch RS and holding
plates 25 / 26 with at-head screws F1 .
•Mount the reference switches with at head
screws F8 and hammer nuts H2 at the end
positions of the axes, as shown in Figs.
28 to 32.
Position the switches to trigger approx. 5 mm
before the mechanical end.
•The reference angle 35 is used to trigger the
reference switch on the Z axis. Mount the
bracket to the sled using at-head screws F2
as shown in Fig. 32.
Fig. 28: Position of the reference switches on the machine
RS
Fig. 29: Reference switch X axis
Fig. 30: Reference switch Y axis
Fig. 31: Reference switch Z axis
Fig. 32: Reference angle Z axis
F1
30 RS
25
F8
RS
30
25
F1
F8
26
30 RS
F1
F8
35
F2