Bearing Preload Washers | McMaster-Carr

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Thickness

Working Load

Material

Chrome-Vanadium Steel

High-Carbon Steel

Compressed Height @ Working Load

Deflection @ Working Load

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Export Control Classification Number (ECCN)

EAR99

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54 Products

Conical Disc Springs for Ball Bearings


	Stacking Configurations

Fill the space around ball bearings to prevent noise and unwanted movement along the shaft. Unlike spring lock washers, these disc springs return to their original height again and again when decompressed. Also known as bearing preload washers and Belleville disc springs.

To increase working load or deflection, stack multiple springs. A nested stack increases working load; an inverted stack increases deflection. In a nested and inverted stack, both load and deflection increase. Multiply the original working load or deflection (depending on your configuration) by the number of springs to find your new total.

Steel—Strong and resilient, but best suited for dry environments since moisture will cause these springs to rust.

	For Bearing Trade No.	ID	OD	Thk.	Ht.	Compressed Ht. @ Working Load	Deflection @ Working Load	Working Load, lb.	Flat Load	Material	Pkg. Qty.		Pkg.







				Steel

				R2	0.228"	0.366"	0.0079"	0.016"	0.01"	0.006"	6	Not Rated	High-Carbon Steel	10	94065K21	000000


				R3	0.319"	0.492"	0.0098"	0.02"	0.013"	0.007"	8	Not Rated	High-Carbon Steel	10	94065K26	0000
				R4	0.406"	0.618"	0.0098"	0.022"	0.013"	0.009"	7	Not Rated	High-Carbon Steel	10	94065K32	0000
				R4A	0.447"	0.738"	0.014"	0.03"	0.018"	0.012"	10	Not Rated	High-Carbon Steel	10	94065K18	0000
				R6	0.539"	0.862"	0.0138"	0.03"	0.018"	0.012"	11	Not Rated	High-Carbon Steel	10	94065K44	0000
				R8	0.725"	1.11"	0.0158"	0.043"	0.022"	0.021"	23	Not Rated	High-Carbon Steel	10	94065K54	0000
				R10	1"	1.358"	0.0197"	0.047"	0.026"	0.021"	35	Not Rated	High-Carbon Steel	10	94065K62	00000
				R12	1.1"	1.6"	0.02"	0.055"	0.029"	0.026"	26	Not Rated	High-Carbon Steel	5	94065K221	00000
				R14	1.119"	1.846"	0.025"	0.06"	0.034"	0.026"	28	Not Rated	High-Carbon Steel	5	94065K253	00000
				R16	1.31"	1.97"	0.025"	0.06"	0.034"	0.026"	29	Not Rated	High-Carbon Steel	5	94065K294	00000
				R18	1.55"	2.093"	0.025"	0.06"	0.034"	0.026"	30	Not Rated	High-Carbon Steel	5	94065K312	00000


				R20	1.58"	2.216"	0.025"	0.065"	0.035"	0.03"	32	Not Rated	High-Carbon Steel	5	94065K331	00000
				R22	1.76"	2.462"	0.028"	0.068"	0.038"	0.03"	33	Not Rated	High-Carbon Steel	5	94065K355	00000
				R24	1.85"	2.585"	0.028"	0.073"	0.04"	0.033"	38	Not Rated	High-Carbon Steel	5	94065K384	00000
				607, EL7	10.2 mm	18.8 mm	0.35 mm	0.7 mm	0.44 mm	0.26 mm	11	Not Rated	High-Carbon Steel	10	94065K41	0000
				608, 627, EL8	12.3 mm	21.8 mm	0.35 mm	0.75 mm	0.45 mm	0.3 mm	10	Not Rated	High-Carbon Steel	10	94065K42	0000
				609, EL9	14.3 mm	23.7 mm	0.4 mm	0.9 mm	0.52 mm	0.38 mm	18	Not Rated	High-Carbon Steel	10	94065K46	0000
				623, EL3	6.2 mm	9.8 mm	0.2 mm	0.4 mm	0.25 mm	0.15 mm	5	Not Rated	High-Carbon Steel	10	94065K24	0000
				624, EL4	7.2 mm	12.8 mm	0.25 mm	0.5 mm	0.31 mm	0.19 mm	7	Not Rated	High-Carbon Steel	10	94065K28	0000
				625, 634, EL5	8.2 mm	15.8 mm	0.25 mm	0.55 mm	0.32 mm	0.23 mm	5	Not Rated	High-Carbon Steel	10	94065K34	0000
				626, 635	9.2 mm	18.8 mm	0.3 mm	0.65 mm	0.39 mm	0.26 mm	6	Not Rated	High-Carbon Steel	10	94065K36	0000


				629, 6000	14.3 mm	25.7 mm	0.4 mm	0.9 mm	0.52 mm	0.38 mm	14	Not Rated	High-Carbon Steel	10	94065K49	0000
				6001	17.3 mm	27.7 mm	0.4 mm	1 mm	0.55 mm	0.45 mm	18	Not Rated	High-Carbon Steel	10	94065K52	0000
				6002, 6201	20.4 mm	31.7 mm	0.4 mm	1.1 mm	0.57 mm	0.53 mm	18	Not Rated	High-Carbon Steel	10	94065K58	0000
				6003, 6202	22.4 mm	34.6 mm	0.5 mm	1.2 mm	0.67 mm	0.53 mm	27	Not Rated	High-Carbon Steel	10	94065K66	0000
				6004, 6302	25.5 mm	41.6 mm	0.5 mm	1.4 mm	0.72 mm	0.68 mm	25	Not Rated	High-Carbon Steel	10	94065K79	0000
				6005, 6204, 6303	30.5 mm	46.5 mm	0.6 mm	1.5 mm	0.82 mm	0.68 mm	34	Not Rated	High-Carbon Steel	10	94065K84	00000
				6006	40.5 mm	54.5 mm	0.6 mm	1.5 mm	0.82 mm	0.68 mm	32	Not Rated	High-Carbon Steel	5	94065K87	0000
				6007, 6206, 6305	40.5 mm	61.5 mm	0.7 mm	1.8 mm	0.97 mm	0.83 mm	40	Not Rated	High-Carbon Steel	2	94065K112	0000
				6008	50.5 mm	67.5 mm	0.7 mm	1.7 mm	0.95 mm	0.75 mm	36	Not Rated	High-Carbon Steel	2	94065K162	0000
				6009	55.5 mm	74.5 mm	0.8 mm	1.9 mm	1.07 mm	0.83 mm	47	Not Rated	High-Carbon Steel	2	94065K166	0000


				6010, 6208	55.5 mm	79.5 mm	0.8 mm	2.3 mm	1.17 mm	1.13 mm	59	Not Rated	High-Carbon Steel	2	94065K124	0000
				6011, 6210	65.5 mm	89.5 mm	0.9 mm	2.5 mm	1.3 mm	1.2 mm	75	Not Rated	High-Carbon Steel	2	94065K135	0000
				6012	75.5 mm	94.5 mm	1 mm	2.2 mm	1.3 mm	0.9 mm	73	Not Rated	High-Carbon Steel	1	94065K168	0000
				6013, 6211	70.5 mm	99 mm	1 mm	2.6 mm	1.4 mm	1.2 mm	75	Not Rated	High-Carbon Steel	1	94065K142	0000
				6014, 6212	75.5 mm	109 mm	1.25 mm	2.7 mm	1.61 mm	1.09 mm	89	Not Rated	Chrome-Vanadium Steel	1	94065K149	0000
				6015	90.5 mm	114 mm	1.25 mm	2.45 mm	1.55 mm	0.9 mm	89	Not Rated	High-Carbon Steel	1	94065K173	0000
				6017, 6215	95.5 mm	129 mm	1.25 mm	3.2 mm	1.74 mm	1.46 mm	112	Not Rated	High-Carbon Steel	1	94065K177	00000
				6018, 6216	101 mm	139 mm	1.25 mm	3.25 mm	1.75 mm	1.5 mm	96	Not Rated	High-Carbon Steel	1	94065K92	00000
				6200	17.4 mm	29.7 mm	0.4 mm	1.1 mm	0.57 mm	0.53 mm	19	Not Rated	High-Carbon Steel	10	94065K56	0000
				6203	25.5 mm	39.6 mm	0.5 mm	1.3 mm	0.7 mm	0.6 mm	25	Not Rated	High-Carbon Steel	10	94065K77	0000


				6205, 6304	35.5 mm	51.5 mm	0.6 mm	1.5 mm	0.82 mm	0.68 mm	30	Not Rated	High-Carbon Steel	5	94065K85	0000
				6207	50.5 mm	71.5 mm	0.7 mm	2.1 mm	1.05 mm	1.05 mm	49	Not Rated	High-Carbon Steel	2	94065K116	0000
				6209	60.5 mm	84.5 mm	0.9 mm	2.5 mm	1.3 mm	1.2 mm	81	Not Rated	High-Carbon Steel	2	94065K128	0000
				6213	85.5 mm	119 mm	1.25 mm	2.8 mm	1.64 mm	1.16 mm	88	Not Rated	High-Carbon Steel	1	94065K171	0000
6300				20.4 mm	34.6 mm	0.4 mm	1.1 mm	0.57 mm	0.53 mm	14	Not Rated	High-Carbon Steel	10	94065K64	0000
6301	20.4 mm			36.6 mm	0.5 mm	1.3 mm	0.7 mm	0.6 mm	25	Not Rated	High-Carbon Steel	10	94065K68	0000
6306	45.5 mm			71.5 mm	0.7 mm	2.1 mm	1.05 mm	1.05 mm	42	Not Rated	High-Carbon Steel	2	94065K114	0000
6307	50.5 mm			79.5 mm	0.8 mm	2.3 mm	1.17 mm	1.13 mm	51	Not Rated	High-Carbon Steel	2	94065K122	0000
6308	60.5 mm			89.5 mm	0.9 mm	2.5 mm	1.3 mm	1.2 mm	64	Not Rated	High-Carbon Steel	2	94065K131	0000
6309	65.5 mm	99 mm		1 mm	2.6 mm	1.4 mm	1.2 mm	65	Not Rated	High-Carbon Steel	2	94065K138	0000
6311	75.5 mm	119 mm	1.25 mm	2.8 mm	1.64 mm	1.16 mm	71	Not Rated	High-Carbon Steel	1	94065K88	00000
6312	85.5 mm	129 mm	1.25 mm	3.2 mm	1.74 mm	1.46 mm	91	Not Rated	High-Carbon Steel	1	94065K156	0000
6313	90.5 mm	139 mm	1.25 mm	3.25 mm	1.75 mm	1.5 mm	79	Not Rated	High-Carbon Steel	1	94065K91	00000