ROTARY SURFACE GRINDERS
Rotary Surface Grinders — Vertical Spindle
Maximum production, finish, and accuracy — R-20 to R-60
Overview
Established in 1964, Alex Machine Tools is one of India’s leading manufacturers and exporters of vertical spindle rotary surface grinders, with sales and support based in Houston, Texas serving customers across the USA and 30+ countries worldwide.
The RV series is engineered for surface grinding where maximum production, finish, and accuracy are prerequisites. Available from 20" to 60" magnetic tables with 7.5 to 75 HP spindle motors, every model can be supplied in CNC (Siemens or Fanuc) or PLC configuration, with open or closed guard options and sliding-table variants. Its rigidity, powerful spindle, and strong magnet performance make it a dependable choice for automotive, bearing, and heavy-industry production — and our engineers help configure the right table size, control, and accessories for your application.
Typical Components
Specifications
Model range: R-20, R-30, R-40, R-50, R-60
| Specification | Unit | R-20 | R-30 | R-40 | R-50 | R-60 |
|---|---|---|---|---|---|---|
| Magnet Table Diameter | mm (in) | 500 (20) | 750 (30) | 1000 (40) | 1250 (50) | 1500 (60) |
| Segment Wheel Diameter | mm (in) | 350 (14) | 450 (18) | 550 (22) | 700 (28) | 810 (32) |
| Segments per Set | Nos | 8 | 8 | 10 | 12 | 14 |
| Max Wheel Clearance | mm (in) | 150 (6) | 250 (10) | 250 (10) | 350 (14) | 500 (20) |
| Spindle Speed | rpm | 1200 | 960 | 750 | 500 | 460 |
| Table Speed | rpm | 10 & 20 | 7.5 & 15 | 6 & 12 | 5 & 10 | 4 & 10 |
| Auto Feed per Min | mm (in) | 0.05–10 (0.002–0.04) | 0.05–10 (0.002–0.04) | 0.05–10 (0.002–0.04) | 0.05–10 (0.002–0.04) | 0.05–10 (0.002–0.04) |
| Spindle Motor | hp (kW) | 7.5 (5.5) | 25 (18.5) | 30 (22) | 60 (45) | 75 (55) |
| Table Motor | hp (kW) | 1/1.5 (0.75/1.1) | 2/3 (1.5/2.2) | 3/4 (2.2/3.7) | 4/5 (3/3.7) | 5/7.5 (3.7/5.5) |
| Machine Size L×W×H | mm (in) | 1750×1200×1500 (69×47×59) | 2000×1600×1900 (80×63×75) | 2000×1600×1900 (80×63×75) | 2900×2200×2400 (115×87×95) | 3200×3200×2700 (126×126×106) |
| Net Weight | kg (lb) | 2000 (4400) | 5000 (11000) | 6500 (14500) | 9000 (20000) | 13000 (29000) |
| Gross Weight | kg (lb) | 3000 / 6500 | 6000 / 13000 | 7500 / 17000 | 10500 / 23000 | 15000 / 33000 |
• Infinitely variable automatic feed on all models
• Sliding table options available
• Every model available in CNC (Siemens, Fanuc) or PLC configuration; open & closed guard options
• Accessories: coolant systems, linear glass scale (vertical axis), in-process gauging, magnetic separator, paper band filter, compact band filter, chiller unit
• R-80 — coming soon
See the RV in Action
Machine introduction, a real case study on components ground, and what our customers say.
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