Grinding machine with rotary table
Grinding machine T.R. 400Model T.R. 400
This grinding machine with rotary table is supplied with:
- Wheel flange and Cup wheel
- Semi-automatic dresser
- Coolant system
- Instruction Manual
- Set of service wrenches
This model of Grinding machine with rotary table is equipped with a table that, being controlled by a two-speed motor, can rotate at 8 or 16 revolutions per minute; the slow table rotation allows grinding very precisely and obtaining particularly smooth surfaces.
To bear loads of notable weight without undergoing deformations, the table is mounted on adjustable tapered roll precision bearings. The column of the Grinding Machine with rotary table, mounted on four adjustable precision bearings, is stiffened by a sturdy column support to bear eventual loads.
This Grinding machine with rotary table allows grinding surfaces with maximum diameter of mm 400 and circular crown surfaces with a maximum diameter of mm 500. It is possible to reset the perfect asset of the Grinding machine by acting on registration dowels and on screws, allowing optimal performances even after years.
This vertical-axis Grinding machine is provided with:
- CAST IRON BED to maintain the geometric stability of the grinding machine in time, too.
- CAST IRON COLUMN, protected by bellows and supported by four adjustable precision bearings, broadly sized for this type of grinding machine with rotary table.
- Three-phase MOTOR air-cooled by double jacket, to prevent the overheating of the grinding machine motor during continuous machining and to keep the temperature of the motor shaft and of bearings constant.
- Hardened, ground and dynamically balanced SHAFT, supported by precision ball bearings, widely sized for this type of grinding machine with rotary table and self-adjusting by means of springs for the backlash preload, to absorb thermal expansions.
- VERTICAL TRANSLATION SCREW supported by opposite and adjustable ball bearings, with apt motion for maintaining, in this model of grinding machine with rotary table, the wheel work field free from hindrances and for avoiding dust depositions.
- Metal BELLOWS for a better protection of the vertical translation screw of the grinding machine.
- Opposite bronze NUTS, for the recovery of the eventual wear in time of the vertical translation screw of the grinding machine with rotary table.
- REGISTRATION DOWELS positioned at the column base, on the column support and on the wheel motor, to re-align the grinding machine to the axis, obtaining parallel surfaces also in time.
- HANDWHEEL of the grinding machine, supported by three bearings and engaged on the screw by means of a pair of helical gears, equipped with graduated drum, supported by a trust bearing, for a manual increment of mm 0.01 – 0.02 – 0.03 for each single removal; the rapid feed per handwheel turn is mm 2.
- KNOB WITH JACK, for the programmable micrometric feed of mm 0.01 – 0.02 – 0.03 – 0.04 per pulse, which allows a simple use by avoiding the constant increment control.
- SLOTS to permit the maximum use in height of the work field of the grinding machine wheel and to clamp non-magnetic parts and accessories such as magnetic chuck and self-centering chuck.
- Low-voltage CONTROLS, protection, indicator light and all requisites to comply with safety and conformity regulations provided for this type of grinding machine with rotary table.
- HANDLES, SHAPES AND SIZES of the grinding machine with rotary table designed to meet the current ergonomic recommendations for work.
Accessories
Surface Grinding machine with rotary table T.R. 400
Technical characteristics:
Grinding machine with rotary table T.R. 400
| Max. grinding surface | mm ø 400 |
| Useful basic surface | mm ø 400 |
| Distance between wheel and base (without chuck) | mm 300 |
| Cast-iron column | mm ø 115 |
| Bellows for drive-screw/column | metal/rubber |
| Hard-chromium-plated column | optional |
| Rapid feed per handwheel turn | mm 2 |
| Fine infeed | mm 0.01 ÷ 0.04 |
| Automatic feed synchronized with table turns | - |
| Semi-automatic dresser | included |
| Wheel motor rotation | rpm 2800 |
| Cup wheel (24 grain) | included, mm ø 200x78x78 |
| Diamond grinding wheel | optional, mm ø 200x50x78 |
| CBN ginding wheel | optional, mm ø 200x50x78 |
| Diamond grinding wheel for concrete | optional, mm ø 200x50x78 |
| Segment-holder (24 grain) | optional, mm ø 200 |
| Segments | optional, mm 60x55x22x110 |
| Table swivel | - |
| Table revolutions by means of pulleys | rpm 8-16 |
| Table revolutions with speed reduction and speed change gear | - |
| Power-rate of wheel motor | kW 3.6 - (HP)(5.5) |
| Power-rate of rotary-table motor | kW 0.37 - (HP) (0.55) |
| Power-rate of electric pump | kW 0.06 |
| Magnetic chuck | optional, mm ø 400 |
| Width x depth of machine | mm 1120x1200 |
| Max. / min. machine height | mm 2150/2070 |
| Net weight | kg 720 |
Frequently asked questions
The T.R. 400 rotary table grinding machine grinds surfaces with a maximum diameter of 400 mm, and ring-shaped surfaces up to 500 mm.
The two-speed motor (8 or 16 rpm) allows a slow table rotation, enabling a very precise grind with a particularly smooth finish.
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