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Centro de mecanizado universal de 4 ejes Grob G840
Universal 4-axis machining centre GROB G840 · Layout and dimensions Layout and dimensions
Universal 4-axis machining centre GROB G840 · Overview Overview
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GROB

Universal 4-axis machining centre GROB G840

GROB's heavy-duty 4-axis machine: 800 × 800 pallet, workpieces up to Ø 1,600 × 1,500 mm and 2,200 kg, and geared spindle up to 2,400 Nm.

Ref. Grob G840

Travels X/Y/Z
1,400 · 1,200 · 1,400 mm
Spindle
10,000 rpm HSK-A100 · 340 Nm
Pallet · max. workpiece
Pallet 800 × 800 mm · workpiece Ø 1,400
Tools
57 (up to 476)
Weight
37,600 kg
CNC control
SIEMENS SINUMERIK ONE
Call +34 966 662 296

We reply within 24 working hours.

Technical data

Select a section to see the details:

SpeedTaperPower (100 % / 40 % DC)Torque (100 % / 40 % DC)Availability
10,000 rpm Most common HSK-A10020 / 26 kW262 / 340 NmStandard
8,000 rpm HSK-A100 / SK5052 / 66 kW699 / 900 NmOptional
9,000 rpm HSK-A100 / SK5054 / 65 kW470 / 575 NmOptional
8,000 rpm HSK-A10080 / 100 kW1,107 / 1,404 NmOptional
7,200 rpm HSK-A10080 / 100 kW1,273 / 1,666 NmOptional
13,000 rpm HSK-A10064 / 75 kW226 / 265 NmOptional
6,000 rpm HSK-A10063 / 78 kW2,000 / 2,400 NmOptional
B rotary table with 2-position pallet changer (included as standard)
B rotary table with 2-position pallet changer (included as standard) Sizepallet 800 × 800 mm (opt. 800 × 1,000); change 17.0 sMax. load1,700 (2,200 opt.); total load 3,400 / 4,400 kg

Interference envelope depending on axis position and table type: check that your part fits before requesting a quotation.

Maximum part size Universal 4-axis machining centre GROB G840Enlarge drawing
StandardØ 1,400 × 1,500 mm
OptionØ 1,550 / Ø 1,600 (with flattening) × 1,500 mm (R1,450)
Compact double disc57 HSK-A100
Compact triple disc87 HSK-A100
Four discs117 HSK-A100
Six discs172 HSK-A100
Tower magazine238 / 476 HSK-A100 or SK50
MagazineMax. length 500 mm (830 mm on first disc)
B axis (rotary)rotary table with torque motor (standard)
Rapid traverse X/Y/Z (m/min)X/Y/Z 50 / 50 / 50
Acceleration X/Y/Z (m/s²)4.5 / 5.5 / 4.5
Positioning accuracy0.006 mm; repeatability < 0.003 mm
Chip-to-chip time (s)5.3 – 6.2
CNC controlSIEMENS SINUMERIK ONE (only control listed) · GROB4Pilot panel
With compact magazine4,600 × 7,900 (9,200 total) × 4,000 mm (width × length × height)
With large magazine5,100 × 7,900 (9,200 total) × 4,000 mm

Weight with pallet changer (standard) and without tool magazine.

Data from the manufacturer's catalogue; the final configuration is confirmed in the quotation.

Automation options

Ready to be automated from day one or whenever you need it: more spindle hours without an operator and a lower cost per part.

PSS-L linear pallet magazinePalletsPSS-L linear pallet magazine

Modular, expandable system: it grows with your production and can link up to 5 machines.

✓ PSS-L2700

Additional TM tool magazineToolsAdditional TM tool magazine

More tools available to produce more part numbers without changing tools by hand.

✓ up to 476 tools

All cells are managed with GROB4Automation software (order planning, ERP/MES connection and mobile alerts). Compatibility is based on the GROB Automation catalogue 04/2025; please confirm the configuration with Ferrotall.

Ferrotall service

  • Installation and training Commissioning in your workshop and operator training by our technical team.
  • In-house service engineers Service team with specialist technicians and spare parts to keep your machine in production.
  • Application advice We help you choose the machine and equipment to suit your parts and production.
  • More than 45 years Machine tool distributor based in Monforte del Cid (Alicante).
Universal 4-axis machining centre GROB G840
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