Bahmüller I29-1-4-CNC Internal Cylindrical Grinding Machines 3 Machines + Bahmüller CPR02 CNC Internal & External Cylindrical Grinding Machine – Total 4 Machines
1.) Bahmüller I29-1-4-CNC Siemens 840D Internal cylindrical grinding – Year 2005
2.) Bahmüller I29-1-4-CNC Siemens 840D Internal cylindrical grinding – Year 2006
3.) Bahmüller I29-1-4-CNC Siemens 840D Internal cylindrical grinding – Year 2007
4.) Bahmüller CPR02 CNC Bosch-Rexroth Internal and external cylindrical grinding machine – Year 2006
Bahmüller I29-1-4 Technical Details :
It is with great pleasure that I share with you the technical specifications of the Bahmüller I29-1-4 — a machine that stands out in the grinding-technology field.
This machine features 2 (two) spacious machining chambers and
is equipped with 4 (four) spindles.
In both chambers, 1 (one) workpiece can be processed simultaneously — true efficiency and precision guaranteed.
Furthermore, there is ample room in the chambers to install alternative spindles, such as drilling spindles, which offers additional flexibility and expands the range of possible applications.
This machine was specially designed for internal valve grinding and meets the highest standards of precision and dimensional accuracy. New machines of comparable caliber cost around *€800,000* from the manufacturer. Regrettably, all three units have already been disconnected from the power supply and stored securely; viewing under power is therefore no longer possible.
For such a rare combination of precision, flexibility, pricing opportunity — and with three identical units available — this is truly not commonplace, but a gem in the world of grinding technology. I hope this insight proves helpful to you.
1.2.123.343 Technical Data
| Designation |
Unit |
Technical Data |
| Grinding Length |
mm |
100 |
| Control Voltage |
V (DC) |
24 |
| Connected Load (Grinding Machine) |
kVA |
28 |
| Operating Voltage |
V |
400 / 230 |
| Frequency |
Hz |
50 |
| Weight Without Control Cabinet |
kg |
5000 |
| Required Floor Space |
mm |
4650 × 6900 |
Grinding Spindle Drive
| Designation |
Unit |
Technical Data |
| Speed (max.) |
U/min |
105000 |
| Power (S6–60%) |
kW |
0.95 |
Grinding Feed (X-Axis)
| Slide Travel |
mm |
190 |
| Speed |
m/min |
0 to 15 |
| Resolution |
mm |
0.0001 |
| Display Increment |
mm |
0.001 |
Grinding Table (Z-Axis)
| Table Travel |
mm |
400 |
| Speed |
m/min |
0 to 15 |
| Resolution |
mm |
0.0001 |
| Display Increment |
mm |
0.001 |
Short-Stroke Slide (W-Axis)
| Table Travel |
mm |
30 |
| Oscillation Speed |
Double Strokes/min |
600 |
| Resolution |
mm |
0.0001 |
| Display Increment |
mm |
0.001 |
Workpiece Spindle Head
| Speed, Infinitely Variable |
U/min |
0 to 4500 |
| Spindle Taper |
MK |
4 |
Operating Environmental Conditions
| Temperature |
°C |
+15 to +35 |
| Humidity |
|
Dry, under roof and protected from moisture |
| Installation Altitude |
m |
max. 1000 above sea level |
Transport and Storage Conditions
| Temperature |
°C |
-25 to +55 |
Environmental Load
| Noise Level (measured per DIN ISO 11202, accuracy class 3 in automatic operation) |
dB(A) |
78 |
Source: Bahmüller Internal Grinding Machine SI-03343 (03/2006)
1. Grinding Wheel Equipment in Delivery Condition
Note: The built-in grinding wheel guard is designed for the following grinding wheels:
| Designation |
Unit |
Technical Data |
| Manufacturer, Supplier, Importer |
|
Schmeier |
| Specification |
|
4 B40 P / Q4V |
| Dimensions |
mm |
4.5 × 12 / M2 / 2.2 |
| Maximum Operating Speed |
m/s |
50 |
| Permissible Speed of the New Grinding Wheel |
min-1 |
212200 |
| Grinding Wheel |
|
without ceramic base body |
| Usage Restriction |
|
Not permitted for freehand or manually guided grinding. Only permissible in an enclosed workspace. |
| Manufacturer’s Test Mark |
|
VBG 49 |
| Order Number (Bahmüller) |
|
BN 235 461/5-25-12 |
| Designation |
Unit |
Technical Data |
| Manufacturer, Supplier, Importer |
|
Schmeier |
| Specification |
|
15 B45 05V |
| Dimensions |
mm |
4.5 × 8 / M2 / 2.2 |
| Maximum Operating Speed |
m/s |
50 |
| Permissible Speed of the New Grinding Wheel |
min-1 |
212200 |
| Grinding Wheel |
|
without ceramic base body |
| Usage Restriction |
|
Not permitted for freehand or manually guided grinding. Only permissible in an enclosed workspace. |
| Manufacturer’s Test Mark |
|
VBG 49 |
| Order Number (Bahmüller) |
|
BN 235 462/5-25-12 |
2. Permitted Grinding Wheel Equipment of the Machine
- The permissible grinding wheel and grinding arbor dimensions must be taken from the operating instructions of the internal grinding spindle used.
- In addition, the safety instructions in Chapter 6.4.011.XXX (Grinding Spindle Manufacturer) must be observed.
a. Grinding Wheels Made of Bonded Abrasive Material
| Designation |
Unit |
Technical Data |
| Outside Diameter (max.) |
mm |
80 |
| Maximum Operating Speed (vs) |
m/s |
50 |
Bahmüller CPR02-Technical Details :
| Designation |
Unit |
Technical Data |
| Grinding length |
mm |
400 |
| Peripheral speed of grinding wheel |
m/s |
50 |
| Control voltage |
V (DC) |
24 / 230 |
| Connected load (grinding machine) |
kVA |
38 |
| Operating voltage |
V |
400 |
| Frequency |
Hz |
50 |
| Weight with control cabinet (approx.) |
kg |
4500 |
| Space required (Length × Width) |
mm |
4500 × 4000 |
Grinding Spindle Drive (External Grinding)
| Designation |
Unit |
Technical Data |
| Speed |
U/min |
1410 |
| Power (S6-60%) |
kW |
7.5 |
Grinding Spindle Slide (X1 Axis)
| Designation |
Unit |
Technical Data |
| Slide travel |
mm |
285 |
| Speed |
m/min |
0 to 10 |
| Resolution |
mm |
0.0002 |
| Display increment |
mm |
0.001 |
Bed Slide (Z1 Axis)
| Designation |
Unit |
Technical Data |
| Table travel |
mm |
610 |
| Speed |
m/min |
0 to 10 |
| Resolution |
mm |
0.0002 |
| Display increment |
mm |
0.001 |
Grinding Spindle Drive (Internal Grinding)
| Designation |
Unit |
Technical Data |
| Speed |
U/min |
90,000 |
| Power (S6-60%) |
kW |
3 |
Grinding Spindle Slide (X2 Axis)
| Designation |
Unit |
Technical Data |
| Slide travel |
mm |
190 |
| Speed |
m/min |
0 to 10 |
| Resolution |
mm |
0.0001 |
| Display increment |
mm |
0.001 |
Bed Slide (Z2 Axis)
| Designation |
Unit |
Technical Data |
| Table travel |
mm |
190 |
| Speed |
m/min |
0 to 10 |
| Resolution |
mm |
0.0001 |
| Display increment |
mm |
0.001 |
Workpiece Spindle Head
| Designation |
Unit |
Technical Data |
| Speed, stepless |
U/min |
0 to 4500 |
| Spindle taper |
MK |
4 |
Operating Environment
| Designation |
Unit |
Technical Data |
| Temperature (operation) |
°C |
+15 to +35 |
| Humidity |
— |
Dry, sheltered and protected from moisture |
| Installation height |
m |
Max. 1000 above sea level |
| Temperature (transport & storage) |
°C |
-25 to +55 |
| Noise level (DIN ISO 11202, Class 3 measurement in automatic mode) |
dB(A) |
78 |
1. Grinding Wheel Equipment on Delivery (External Grinding)
| Designation |
Unit |
Technical Data |
| Manufacturer / Supplier / Importer |
— |
Saint-Gobain Efesis |
| Specification (grinding layer) |
— |
27 AH 60 J8 V450.EV |
| Dimensions |
mm |
500 × 30 × 203.2 |
| Maximum working speed |
m/s |
50 |
| Permissible speed of new wheel |
min⁻¹ |
1910 |
| Grinding wheel body |
— |
Ceramic core |
| Usage limitation |
— |
Not permitted for freehand or handheld grinding. For enclosed workspace only. |
| Manufacturer’s test mark |
— |
VBG 49 |
| Order number of Bahmüller |
— |
BN 0237 252/5-25-01 |
2. Permissible Grinding Wheel Equipment of the Machine (External Grinding)
| Note: The safety instructions in Chapter 7.2.000.XXX, Section 5 (Protective devices) must be observed. |
| Designation |
Unit |
Technical Data |
| a) Grinding wheel made of bonded abrasive material |
| Outside diameter (max.) |
mm |
508 |
| Width (max.) |
mm |
80 |
| Bore diameter |
mm |
203.2 |
| Maximum working speed (vₛ) |
m/s |
50 |
| b) Grinding wheels with steel or aluminum core and diamond/CBN with metal bond |
| Outside diameter (max.) |
mm |
508 |
| Width (max.) |
mm |
40 |
| Bore diameter |
mm |
203.2 |
| Maximum working speed (vₛ) |
m/s |
125 |
3. Grinding Wheel Equipment on Delivery (Internal Grinding)
| Designation |
Unit |
Technical Data |
| Manufacturer / Supplier / Importer |
— |
Wendt |
| Specification (grinding layer) |
— |
M91-VR-150N/G |
| Dimensions |
mm |
Ø6.5 × 24 × Ø4.5 |
| Maximum working speed |
m/s |
63 |
| Grinding wheel body |
— |
Steel body |
| Usage limitation |
— |
Not permitted for freehand or handheld grinding. For enclosed workspace only. |
| Manufacturer’s test mark |
— |
VBG 49 |
| Order number of Bahmüller |
— |
BN 0237 767/5-25-12 |
| Designation |
Unit |
Technical Data |
| Manufacturer / Supplier / Importer |
— |
Wendt |
| Specification (grinding layer) |
— |
J12M.000.010 – 6.6–6.8–3.3 – M46-VX200 J/Z-M2.5 × 17.8 |
| Dimensions |
mm |
Ø6.6 × 6.8 × Ø4.5 (90°) |
| Maximum working speed |
m/s |
63 |
| Grinding wheel body |
— |
Steel body |
| Usage limitation |
— |
Not permitted for freehand or handheld grinding. For enclosed workspace only. |
| Manufacturer’s test mark |
— |
VBG 49 |
| Order number of Bahmüller |
— |
BN 0234 468/5-25-12 |
| Designation |
Unit |
Technical Data |
| Manufacturer / Supplier / Importer |
— |
Wendt |
| Specification (grinding layer) |
— |
M91-VR-150N/G |
| Dimensions |
mm |
Ø6.6 × 20.5 × Ø4.5 |
| Maximum working speed |
m/s |
63 |
| Grinding wheel body |
— |
Steel body |
| Usage limitation |
— |
Not permitted for freehand or handheld grinding. For enclosed workspace only. |
| Manufacturer’s test mark |
— |
VBG 49 |
| Order number of Bahmüller |
— |
BN 0237 912/5-25-12 |
