SPEED CONVERSION TABLES

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]
Diameter of the grinding wheel ø [mm]	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 ø [mm]	Max peripheral speed V [m/s]
Diameter of the mounted points wheel ø [mm]	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

D = diameter of the grinding wheel
T = height of the grinding wheel
S = pin diameter
L0 = correct mounting distance (check the maximum permissible rotational speed for a given overhang length of the pin)
L2 = pin length
L3 = clamping length (L3 ≥ 10 mm)

Since the beginning of its activity, ANDRE company has been focusing on high quality of its products. At ANDRE, every effort is made to ensure that products meet customers' individual needs and satisfy their highest expectations even in the most difficult grinding operations.

Abrasive tools by ANDRE ABRASIVE ARTICLES are safe.

ANDRE gradually improves its technological process to offer abrasive tools with increasingly better usability and a high safety factor in accordance with the applicable standards. Membership in organizations of leading abrasive tool manufacturers and regular certification fully confirm that.