Rotational and peripheral speed of grinding wheels

Each grinding wheel has a specific permissible operating speed (rotational and peripheral), which is reflected in the tool marking. Always check that the highest permissible speed specified on the grinding wheel matches the speed specified on the machine. In any case, the highest permissible peripheral speed of the grinding wheel must not be exceeded on the machine.

Table of speed conversion depending on the outside diameter of the grinding wheel
This is an excerpt from EN 12 413, and the table shows the conversion of rotational and peripheral speeds for common grinding wheel dimensions.

Diameter of the grinding wheel ø
[mm]

Max peripheral speed V [m/s]

5

6

8

10

12

16

20

25

32

35

40

50

63

80

100

125

140

160

Rotational speed n [rpm]

6

16000

19100

25500

31900

38200

51000

64000

80000

102000

112000

128000

160000

201000

 

 

 

 

 

8

12000

14400

19100

24000

29000

38200

48000

60000

76500

84000

95500

120000

150000

191000

 

 

 

 

10

9600

11500

15300

19100

23000

30600

38200

48000

61200

67000

76500

95500

120500

153000

191000

 

 

 

13

7400

8850

11800

14700

17700

23550

29500

35600

47100

51500

58800

73500

92600

118000

147000

184000

206000

 

16

6000

7200

9550

11950

14350

19100

23900

29850

38200

41800

47800

59700

75200

95500

120000

150000

168000

191000

20

4800

5750

7650

9550

11500

15300

19100

23900

30600

33500

38200

47800

60200

76500

95500

120000

134000

153000

25

3850

4600

6150

7650

9200

12300

15300

19100

24500

26800

30600

38200

48200

61200

76500

95500

107000

123000

32

3000

3600

4800

6000

7200

9550

11950

14950

19100

20900

23900

30000

37600

48000

60000

75000

84000

95500

40

2400

2900

3850

4800

5750

7650

9550

11950

15300

16750

19100

23900

30100

38200

47200

59700

67000

76500

50

1950

2300

3100

3850

4600

6150

7650

9550

12250

13400

15300

19100

24100

30600

38200

47750

53500

61200

63

1550

1850

2450

3050

3650

4850

6100

7600

9750

10650

12150

15200

19100

24300

30250

37900

42500

48500

80

1200

1450

1950

2400

2900

3850

4800

6000

7650

8400

9550

12000

15100

19100

23900

29850

33500

38200

100

960

1150

1550

1950

2300

3100

3850

4800

6150

6700

7650

9550

12100

15300

19100

23900

26800

30600

115

830

1000

1350

1700

2000

2700

3350

4200

5350

5850

6650

8350

10500

13300

16650

20800

23250

26600

125

770

920

1250

1550

1850

2450

3100

3850

4900

5350

6150

7650

9650

12250

15300

19100

21400

24500

150

640

770

1050

1300

1550

2050

2550

3200

4100

4500

5100

6400

8050

10200

12700

16000

17850

20400

180

530

640

850

1100

1300

1700

2150

2700

3400

3750

4250

5350

6700

8500

10650

13300

14900

17000

200

480

580

765

955

1150

1550

1950

2400

3100

3350

3850

4800

6050

7650

9950

11950

13400

15300

230

420

500

665

830

1000

1350

1700

2100

2700

2950

3350

4200

5250

6650

8350

10400

11650

13300

250

380

460

615

765

920

1250

1550

1950

2450

2700

3100

3850

4850

6150

7650

9950

10700

12250

300

320

380

510

640

765

1050

1300

1600

2050

2250

2550

3200

4050

5100

6400

8000

8850

10200

350/356

280

330

440

550

655

875

1100

1400

1750

1950

2200

2750

3450

4400

5500

6850

7650

8750

400/406

240

290

385

480

575

765

960

1200

1550

1700

1950

2400

3050

3850

4800

6000

6700

7650

450/457

210

255

340

425

510

680

850

1100

1400

1500

1700

2150

2700

3400

4250

5350

5950

6800

500/508

190

230

310

385

460

615

765

960

1250

1350

1550

1950

2450

3100

3850

4800

5350

6150

600/610

160

190

255

320

385

510

640

800

1050

1150

1300

1600

2050

2550

3200

4000

4500

5100

750/762

130

155

205

255

310

410

510

640

820

895

1050

1300

1650

2050

2550

3200

3600

4100

800/813

120

145

195

240

290

385

480

600

765

840

960

1200

1550

1950

2400

3000

3350

3850

900/914

110

130

170

215

255

340

425

535

680

750

850

1100

1350

1700

2150

2700

3000

3400

1000/1015

100

115

155

195

230

310

385

480

615

670

765

960

1250

1550

1950

2400

2700

3100

1060/1067  

95

110

150

185

220

295

365

455

585

640

730

910

1150

1500

1850

2300

2550

2950

1200

90

105

140

175

210

280

350

435

560

610

695

870

1100

1400

1750

2200

2450

2800

1220

85

95

130

160

195

255

320

400

510

560

640

800

1050

1300

1600

2000

2250

2550

1500

65

75

105

130

155

205

255

320

410

450

510

640

805

1050

1300

1600

1800

2050

1800

55

65

85

110

130

170

220

265

340

375

425

535

670

850

1100

1350

1500

1700

Table of the dependence of the maximum permissible rotational speed for mounted points on the overhang length of the pin L0=5 mm.

Diameter of the mounted points wheel
[mm]

Max peripheral speed V [m/s]

25 [m/s]

30 [m/s]

40 [m/s]

Rotational speed n [rpm]

10

47700

57300

76400

12

39800

47700

63700

14

34100

40900

54600

16

29800

35800

47700

20

23900

28600

38200

25

19100

22900

30600

32

14900

17900

23900

40

11900

14300

19100

50

9500

11500

15300