Series WST Specifications External, Medium-Heavy Duty

The Maximum Groove Bottom Radius is .005" for rings 50 to 100. .010" for rings 101 and larger.

RING PART NUMBER	A SHAFT DIAMETER		Thrust Load SF-3 Based on Ring Shear	Thrust Load SF-2 Based on Groove Yield (45,000 PSI)	GROOVE DIMENSIONS		RING DIMENSIONS			GENERAL
					Diameter	Width	Free Diameter	*Thickness	Radial Wall	Maximum Corner Radius or Chamfer		Weight lbs./ M
	Inches	mm			C	D	G	F	E	X	Ch
WST-46	.469	11.9	1,800	470	.443	.028	.436	.024	.045	.016	.013	.42
WST-50	.500	12.7	2,530	360	.474	.039	.469	.035	.045	.016	.013	.64
WST-55	.551	14.0	2,790	450	.524	.039	.518	.035	.045	.016	.013	.71
WST-56	.562	14.3	2,840	470	.535	.039	.529	.035	.045	.015	.012	.72
WST-59	.594	15.1	3,000	580	.565	.039	.559	.035	.045	.015	.012	.76
WST-62	.625	15.9	3,160	640	.596	.039	.590	.035	.055	.020	.016	1.00
WST-66	.669	17.0	3,380	770	.638	.039	.630	.035	.055	.020	.016	1.07
WST-68	.688	17.5	4,170	730	.655	.046	.648	.042	.065	.025	.020	1.55
WST-75	.750	19.0	4,550	950	.715	.046	.708	.042	.065	.024	.019	1.69
WST-78	.781	19.8	4,740	1,070	.745	.046	.738	.042	.065	.024	.019	1.76
WST-81	.812	20.6	4,930	1,150	.776	.046	.768	.042	.065	.024	.019	1.83
WST-87	.875	22.2	5,310	1,490	.835	.046	.827	.042	.075	.027	.022	2.28
WST-93	.938	23.8	5,690	1,920	.894	.046	.886	.042	.075	.027	.022	2.44
WST-98	.984	25.0	5,970	2,170	.940	.046	.934	.042	.075	.026	.021	2.56
WST-100	1.000	25.4	6,070	2,250	.955	.046	.947	.042	.075	.026	.021	2.60
WST-102	1.023	26.0	6,210	2,350	.977	.046	.969	.042	.075	.026	.021	2.66
WST-106	1.062	27.0	7,010	1,940	1.015	.056	1.005	.050	.088	.032	.026	3.93
WST-112	1.125	29.0	7,420	2,330	1.075	.056	1.064	.050	.088	.031	.025	4.15
WST-118	1.188	30.2	7,370	2,860	1.135	.056	1.126	.050	.088	.031	.025	4.38
WST-125	1.250	31.7	8,250	3,240	1.195	.056	1.184	.050	.093	.033	.026	4.88
WST-131	1.312	33.3	8,650	4,070	1.250	.056	1.240	.050	.098	.033	.026	5.40
WST-137	1.375	34.9	9,070	4,470	1.310	.056	1.298	.050	.103	.035	.028	5.95
WST-143	1.438	36.5	9,490	4,900	1.370	.056	1.359	.050	.103	.035	.028	6.18
WST-150	1.500	38.1	9,900	5,260	1.430	.056	1.419	.050	.103	.034	.027	6.46
WST-156	1.562	39.6	12,780	5,320	1.490	.068	1.476	.062	.113	.036	.029	8.80
WST-162	1.625	41.7	13,290	6,060	1.550	.068	1.537	.062	.118	.040	.032	10.07
WST-168	1.687	42.8	13,800	6,500	1.610	.068	1.598	.062	.118	.040	.032	10.45
WST-175	1.750	44.4	14,320	7,010	1.670	.068	1.657	.062	.118	.039	.031	10.82
WST-177	1.771	44.9	14,490	7,270	1.689	.068	1.676	.062	.123	.041	.033	11.44
WST-181	1.812	46.0	14,820	7,440	1.730	.068	1.714	.062	.123	.041	.033	11.69
WST-187	1.875	47.6	15,340	7,980	1.790	.068	1.774	.062	.123	.040	.032	12.08
WST-196	1.969	50.0	16,110	8,870	1.879	.068	1.864	.062	.123	.039	.031	12.67
WST-200	2.000	50.8	16,360	9,010	1.910	.068	1.894	.062	.128	.041	.033	13.43
WST-206	2.062	52.3	21,220	9,500	1.970	.086	1.955	.078	.141	.042	.034	19.35
WST-212	2.125	53.9	21,870	10,430	2.027	.086	2.012	.078	.141	.046	.037	19.89
WST-215	2.156	54.7	22,190	10,690	2.057	.086	2.041	.078	.141	.046	.037	20.16
WST-225	2.250	57.1	23,160	11,830	2.145	.086	2.129	.078	.141	.044	.035	21.00
WST-231	2.312	58.7	23,790	12,390	2.205	.086	2.188	.078	.141	.044	.035	21.57
WST-237	2.375	60.3	24,440	13,080	2.265	.086	2.248	.078	.141	.043	.034	22.14
WST-243	2.437	61.9	25,080	13,670	2.325	.086	2.307	.078	.141	.043	.034	22.70
WST-250	2.500	63.5	25,730	14,400	2.385	.086	2.366	.078	.188	.065	.052	31.61
WST-255	2.559	64.9	26,340	14,740	2.451	.086	2.432	.078	.188	.067	.054	32.45
WST-262	2.625	66.6	27,020	15,770	2.505	.086	2.485	.078	.188	.064	.051	33.13
WST-268	2,687	68.2	27,650	16,410	2.565	.086	2.545	.078	.188	.063	.051	33.89
WST-275	2.750	69.8	32,140	17,210	2.625	.103	2.604	.093	.188	.063	.050	40.79
WST-287	2.875	73.0	33,600	19,150	2.742	.103	2.722	.093	.188	.061	.049	42.57
WST-293	2.937	74.5	34,320	20.000	2.801	.103	2.780	.093	.188	.060	.048	43.44
WST-300	3.000	76.1	35,060	21,030	2.860	.103	2.838	.093	.188	.059	.047	44.31
WST-306	3.062	77.7	35,780	21,770	2.920	.103	2.897	.093	.188	.058	.047	45.20
WST-312	3.125	79.3	36,520	22,690	2.980	.103	2.957	.093	.188	.058	.047	46.10
WST-315	3.156	80.1	36,880	23,070	3.010	.103	2.986	.093	.188	.057	.046	46.54
WST-325	3.250	82.5	37,980	24,410	3.100	.103	3.075	.093	.188	.056	.045	47.88
WST-334	3.344	84.9	39,080	25,790	3.190	.103	3.164	.093	.188	.055	.044	49.22
WST-343	3.437	87.2	40,170	27,020	3.280	.103	3.254	.093	.188	.055	.044	50.57
WST-350	3.500	88.8	48,820	28,040	3.340	.120	3.315	.111	.250	.085	.068	83.66
WST-354	3.543	89.9	49,420	28,740	3.381	.120	3.356	.111	.250	.084	.067	84.40
WST-362	3.625	92.0	50,560	30,310	3.458	.120	3.433	.111	.250	.083	.067	86.25
WST-368	3.687	93.6	51,430	31,380	3.517	.120	3.483	.111	.250	.082	.066	87.45
WST-375	3.750	95.2	52,310	32,480	3.577	.120	3.550	.111	.250	.082	.066	89.06
WST-387	3.875	98.3	54,050	34,730	3.696	.120	3.670	.111	.250	.080	.064	91.94
WST-393	3.938	99.9	54,930	35,890	3.756	.120	3.730	.111	.250	.080	.064	93.38
WST-400	4.000	101.5	55,790	37,050	3.815	.120	3.787	.111	.250	.079	.063	94.75
WST-425	4.250	107.9	59,280	39,370	4.065	.120	4.037	.111	.250	.079	.063	100.75
WST-437	4.375	111.0	61,020	40,530	4.190	.120	4.162	.111	.250	.079	.063	103.75
WST-450	4.500	114.2	62,770	42,810	4.310	.120	4.280	.111	.250	.078	.062	106.58
WST-475	4.750	120.6	66,260	47,570	4.550	.120	4.515	.111	.250	.075	.060	112.23
WST-500	5.000	126.9	69,740	52.580	4.790	.120	4.755	.111	.250	.072	.058	117.26
WST-525	5.250	133.2	83,790	57,830	5.030	.139	4.995	.127	.375	.132	.106	217.05
WST-550	5.500	140.0	87,780	64,720	5.265	.139	5.229	.127	.375	.129	.103	226.73
WST-575	5.750	145.9	91,770	70,540	5.505	.139	5.466	.127	.375	.127	.101	236.52
WST-600	6.000	152.3	95,760	76,610	5.745	.139	5.705	.127	.375	.124	.099	246.41
All Rings Listed Below Are Three Turn Crimped Construction
WST-625	6.250	158.6	129,590	82,930	5.985	.174	5.938	.165	.312	.090	.072	265.93
WST-650	6.500	165.0	134,770	89,510	6.225	.174	6.182	.165	.312	.087	.072	276.94
WST-675	6.750	171.3	139,960	96,330	6.465	.174	6.420	.165	.312	.085	.068	287.68
WST-700	7.000	177.7	145,140	103,400	6.705	.174	6.658	.165	.312	.082	.066	298.42
WST-725	7.250	184.0	172,190	111,810	6.942	.174	6.894	.165	.312	.110	.088	374.87
WST-750	7.500	190.4	178,130	120,170	7.180	.209	7.130	.189	.375	.107	.086	445.09
WST-775	7.750	196.8	184,070	128,060	7.420	.209	7.368	.189	.375	.105	.084	459.88
WST-800	8.000	203.0	190,000	136,200	7.660	.209	7.607	.189	.375	.102	.082	474.74
WST-825	8.250	209.8	195,940	144,590	7.900	.209	7.845	.189	.375	.100	.080	489.54
WST-850	8.500	215.7	201,880	153,223	8.140	.209	8.083	.189	.375	.097	.078	504.33
WST-875	8.750	222.2	207,820	160,800	8.383	.209	8.321	.189	.375	.096	.077	519.10
WST-900	9.000	228.4	213,750	171,250	8.620	.209	8.560	.189	.375	.092	.074	533.95
WST-925	9.250	235.0	219,690	180,640	8.860	.209	8.798	.189	.375	.090	.072	548.73
WST-950	9.500	241.1	225,630	190,280	9.100	.209	9.036	.189	.375	.087	.070	563.51
WST-975	9.750	248.0	231,570	201,140	9.338	.209	9.273	.189	.375	.084	.068	578.22
WST-1000	10.000	253.8	237,500	212,810	9.575	.209	9.508	.189	.037	.081	.065	592.81

* "F" Ring thickness applies only to unplated rings. Add .002 to upper thickness tolerance for plated rings.
Groove widths upper will accept plated rings without modification.

back to Smalley Spiral Rings index chart

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