Cylindrical grinding machine RSM 500 A
external cylindricalinternal cylindricalworkpiece

Cylindrical grinding machine - RSM 500 A - Knuth Machine Tools - external cylindrical / internal cylindrical / workpiece
Cylindrical grinding machine - RSM 500 A - Knuth Machine Tools - external cylindrical / internal cylindrical / workpiece
Cylindrical grinding machine - RSM 500 A - Knuth Machine Tools - external cylindrical / internal cylindrical / workpiece - image - 2
Cylindrical grinding machine - RSM 500 A - Knuth Machine Tools - external cylindrical / internal cylindrical / workpiece - image - 3
Cylindrical grinding machine - RSM 500 A - Knuth Machine Tools - external cylindrical / internal cylindrical / workpiece - image - 4
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Characteristics

Type
cylindrical, external cylindrical, internal cylindrical
Applications
workpiece
Structure
horizontal
Control type
conventional
Other characteristics
hydrostatic
Spindle speed

16,000 rpm
(100,531 rad.min-1)

Power

5,625 kVA
(7,647.87 hp)

Speed

38 m/s
(124.67 ft/s)

Machine weight

2,500 kg
(5,511.56 lb)

Description

Description
The RSM 500 A is a conventional cylindrical grinder designed for internal and external grinding of medium-size workpieces. The machine features a heavy cast-iron frame with long supporting guideways, a swiveling table and a finely adjustable hydraulic longitudinal feed. The X-axis handwheel fitted with a large scale ring and a zero stop enables precise infeed. The headstock can be rotated 180° for internal grinding. A comprehensive package of standard accessories is included.

Highlights
  • Internal and external cylindrical grinding
  • Hydrostatic bearings on grinding spindle for high surface quality
  • Swiveling headstock for conical grinding of short parts
  • Integrated rapid feed on X-axis with manual return
  • Extensive standard accessories


Technical specifications
Working area
Center height: 135 mm
Max. workpiece length: 540 mm
Grinding length: 500 mm
Grinding diameter range: 8 mm – 200 mm
Inside grinding diameter without steady rest: 25 mm – 100 mm
Max. workpiece weight between centers: 50 kg
Inside grinding depth: 125 mm
Table swivel range (max.): -3° / +9° R / L
Wheel peripheral speed: 38 m/s

Feed
Table feed, infinitely variable: 0.1 m/min – 4 m/min
Feed per scale division X-axis: 0.005 mm

Headstock
Work spindle speeds: 25 1/min – 380 1/min
Working headstock swivel range: 0–45°
Spindle taper: MT4

Grinding headstock
Inside grinding spindle speed: 16,000 1/min
Grinding headstock swivel range (R+L): ±30°

Tailstock
Tailstock taper: MT4

Drive capacity
Total power consumption: 5.625 kVA

Dimensions and weight
Grinding wheel dimensions: 400 mm x 50 mm x 203 mm
Grinding wheel (inside grinding) max.: 50 mm x 40 mm x 16 mm
Grinding wheel (inside grinding) min.: 45 mm x 35 mm x 10 mm
Overall dimensions (L x W x H): 2.5 m x 1.6 m x 1.5 m
Weight: 2,500 kg

Product details
  • Rigid cast-iron machine frame for vibration damping and stability
  • Hydraulic longitudinal feed with fine, infinitely variable micro-feed
  • High-precision combined V and flat guideways for longitudinal and transverse movement
  • Hydraulically adjustable grinding headstock for simplified set-up and quick workpiece changes
  • Segmented, adjustable, low-maintenance bearing for the grinding spindle
  • Infinitely variable work spindle speeds adjustable during machining
  • Swiveling table for taper grinding
  • Hydraulic tailstock with foot pedal control


Standard accessories
  • 2-axis position display (standard)
  • Device for internal grinding
  • 3-jaw chuck Ø200 mm
  • Chuck flange
  • Balancing stand and arbor
  • Dressing device
  • Live centers and tooling
  • Grinding wheel flange
  • Coolant system
  • Work light
  • Service tools and user manual
  • Open and closed steady rests

Exhibitions

Meet this supplier at the following exhibition(s):

IMTS 2026
IMTS 2026

14-19 Sep 2026 Chicago (USA - Illinois) Hall South Level 3 - Stand 338012

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.