Medium Heavy Duty (Imperial) XWST Series

Many original equipment manufacturers have set groove dimensions specifically for the XWST Series Spirolox® Retaining Ring. While easier to install, this retaining ring series has load carrying ratings close to our heavy duty retaining ring designs.

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Product Information

Many original equipment manufacturers have set groove dimensions specifically for the XWST Series Spirolox^® Retaining Ring. While easier to install, this retaining ring series has load carrying ratings close to our heavy duty retaining ring designs.

Materials: Carbon Steel, 302 & 316 Stainless Steel.
Alternative materials available on request.

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Dimensions: Inches
(in)¹ Based on groove materials yield strength of 45,000 psi and safety factor of 2.² Based on safety factor of 3.Add suffix -S02 or -S16 for stainless steel

Part Number	Shaft Diameter	Ring Inside Diameter		Ring Radial Wall		Ring Thickness		Groove Diameter		Groove Width		Groove Yield¹ (Lb)	Ring Shear² (Lb)
XWST-46	0.469	0.436	+0.00/-0.013	0.045	±0.004	0.025	±0.002	0.443	±0.002	0.029	+0.003/-0.000	430	1800
XWST-50	0.500	0.469		0.045		0.035		0.474	±0.002	0.039		460	2530
XWST-55	0.551	0.518		0.045		0.035		0.524	±0.003	0.039		550	2790
XWST-56	0.562	0.529		0.045		0.035		0.535		0.039		560	2840
XWST-59	0.594	0.559		0.045		0.035		0.565		0.039		630	3000
XWST-62	0.625	0.590		0.055		0.035		0.596		0.039		660	3160
XWST-66	0.669	0.630		0.055		0.035		0.638		0.039		760	3380
XWST-68	0.688	0.648		0.065		0.042		0.655		0.046		830	4180
XWST-75	0.750	0.708		0.065		0.042		0.715		0.046		950	4550
XWST-78	0.781	0.738		0.065		0.042		0.745		0.046		990	4740
XWST-81	0.812	0.768		0.065		0.042		0.776		0.046		1030	4930
XWST-87	0.875	0.827		0.075		0.042		0.835		0.046		1240	5310
XWST-93	0.938	0.886		0.075		0.042		0.894		0.046		1460	5690
XWST-98	0.984	0.934		0.075		0.042		0.940		0.046		1530	5970
XWST-100	1.000	0.947		0.075		0.042		0.955		0.046		1630	6070
XWST-102	1.023	0.969		0.075		0.042		0.977	±0.004	0.046		1660	6210
XWST-106	1.062	1.005	+0.000/-0.015	0.088		0.050		1.015		0.056	+0.004/-0.000	1800	7010
XWST-112	1.125	1.064		0.088		0.050		1.075		0.056		1990	7420
XWST-118	1.188	1.126		0.088		0.050		1.135		0.056		2270	7370
XWST-125	1.250	1.184		0.093		0.050		1.195		0.056		2470	8250
XWST-131	1.312	1.240		0.098		0.050		1.250		0.056		2880	8660
XWST-137	1.375	1.298		0.103		0.050		1.310		0.056		3210	9070
XWST-143	1.438	1.359		0.103		0.050		1.370		0.056		3460	9490
XWST-150	1.500	1.419		0.103		0.050		1.430		0.056		3710	9900
XWST-156	1.562	1.476	+0.000/-0.020	0.113		0.062	±0.003	1.490	±0.005	0.068		3980	12780
XWST-162	1.625	1.537		0.118		0.062		1.550		0.068		4370	13290
XWST-168	1.687	1.598		0.118		0.062		1.610		0.068		4650	13800
XWST-175	1.750	1.657		0.118		0.062		1.670		0.068		4950	14320
XWST-177	1.771	1.676		0.123		0.062		1.689		0.068		5130	14490
XWST-181	1.812	1.714		0.123		0.062		1.730		0.068		5250	14820
XWST-187	1.875	1.774		0.123		0.062		1.790		0.068		5700	15340
XWST-196	1.969	1.864		0.123		0.062		1.879		0.068		6260	16110
XWST-200	2.000	1.894	+0.000/-0.025	0.128		0.062		1.910		0.068		6360	16360
XWST-206	2.062	1.955		0.141		0.078		1.970	±0.006	0.086	+0.005/-00.00	6710	21220
XWST-212	2.125	2.012		0.141		0.078		2.027		0.086		7360	21870
XWST-215	2.156	2.041		0.141		0.078		2.057		0.086		7620	22190
XWST-225	2.250	2.129		0.141		0.078		2.145		0.086		8430	23160
XWST-231	2.312	2.188		0.141		0.078		2.205		0.086		8830	23800
XWST-237	2.375	2.248		0.141		0.078		2.265		0.086		9230	24440
XWST-243	2.437	2.307		0.141		0.078		2.325		0.086		9650	25080
XWST-250	2.500	2.366		0.188	±0.005	0.078		2.385		0.086		10250	25730
XWST-255	2.559	2.424		0.188		0.078		2.443		0.086		10490	26340
XWST-262	2.625	2.485		0.188		0.078		2.505		0.086		11130	27020
XWST-268	2.687	2.545		0.188		0.078		2.565		0.086		11590	27660
XWST-275	2.750	2.604	+0.000/-0.030	0.188		0.093		2.625		0.103		12250	32140
XWST-287	2.875	2.722		0.188		0.093		2.742		0.103		13620	33600
XWST-293	2.937	2.780		0.188		0.093		2.801		0.103		14120	34320
XWST-300	3.000	2.838		0.188		0.093		2.860		0.103		14840	35060
XWST-306	3.062	2.897		0.188		0.093		2.920		0.103		15370	35790
XWST-312	3.125	2.957		0.188		0.093		2.980		0.103		16130	36520
XWST-315	3.156	2.986		0.188		0.093		3.010		0.103		16290	36880
XWST-325	3.250	3.075		0.188		0.093		3.100		0.103		17230	37980
XWST-334	3.344	3.164		0.188		0.093		3.190		0.103		18200	39080
XWST-343	3.437	3.254		0.188		0.093		3.280		0.103		19190	40170
XWST-350	3.500	3.315	+0.000/-0.040	0.250		0.111		3.340		0.120		19790	48820
XWST-354	3.543	3.356		0.250		0.111		3.381		0.120		20290	49420
XWST-362	3.625	3.433		0.250		0.111		3.458		0.120		21520	50560
XWST-368	3.687	3.490		0.250		0.111		3.517		0.120		22150	51430
XWST-375	3.750	3.550		0.250		0.111		3.577		0.120		23060	52310
XWST-387	3.875	3.670		0.250		0.111		3.696		0.120		24650	54050
XWST-393	3.938	3.730		0.250		0.111		3.756		0.120		25330	54930
XWST-400	4.000	3.787		0.250		0.111		3.815		0.120		26300	55800
XWST-425	4.250	4.032		0.250		0.111		4.065		0.120		27940	59280
XWST-437	4.375	4.162		0.250		0.111		4.190		0.120		28760	61030
XWST-450	4.500	4.280		0.250		0.111		4.310		0.120		30220	62770
XWST-475	4.750	4.515		0.250		0.111		4.550		0.120		33580	66260
XWST-500	5.000	4.755		0.250		0.111		4.790		0.120		37110	69740
XWST-525	5.250	4.995	+0.000/-0.050	0.375	±0.006	0.127	±0.004	5.030	±0.007	0.139	+0.006/-0.000	40820	83790
XWST-550	5.500	5.229		0.375		0.127		5.265		0.139		45880	87780
XWST-575	5.750	5.466		0.375		0.127		5.505		0.139		49990	91770
XWST-600	6.000	5.705		0.375		0.127		5.745		0.139		54290	95760
Rings Listed Below Are Three-Turn Construction
XWST-625	6.250	5.942	+0.000/-0.060	5.942	±0.006	0.165	±0.005	5.985	±0.008	0.174	+0.008/-0.000	58760	129590
XWST-650	6.500	6.182		6.182		0.165		6.225		0.174		63410	134780
XWST-675	6.750	6.420		6.420		0.165		6.465		0.174		68230	139960
XWST-700	7.000	6.658		6.658		0.165		6.705		0.174		73230	145140
XWST-725	7.250	6.894	+0.000/-0.070	6.894		0.165		6.942		0.174		78290	172190
XWST-750	7.500	7.130		7.130		0.189		7.180		0.209		84820	178130
XWST-775	7.750	7.368		7.368		0.189		7.420		0.209		90390	184070
XWST-800	8.000	7.607		7.607		0.189		7.660		0.209		96130	190000
XWST-825	8.250	7.845		7.845		0.189		7.900		0.209		102050	195940
XWST-850	8.500	8.083		8.083		0.189		8.140		0.209		108150	201880
XWST-875	8.750	8.321		8.321		0.189		8.383		0.209		113800	207820
XWST-900	9.000	8.560		8.560		0.189		8.620		0.209		120870	213750
XWST-925	9.250	8.798		8.798		0.189		8.860		0.209		127500	219690
XWST-950	9.500	9.036		9.036		0.189		9.100		0.209		134300	225630
XWST-975	9.750	9.273		9.273		0.189		9.338		0.209		141970	231570
XWST-1000	10.000	9.508		9.508		0.189		9.575		0.209		150560	237500

With ISO9001: 2015 approval incorporating Design Status, our qualified engineering staff are able to offer a completely free of charge engineering service and are available to assist with part selection, custom design, application requirements, material selection and more.

Applications are discussed in-depth, first-off design data and drawings are submitted for approval to ensure our customers are provided with the correct design, first time. However, on those rare occasions when modifications are necessary, our no-tooling process and flexible manufacturing procedures means the production of prototypes is easily and economically achieved without onerous tooling charges and long lead times.

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Our supply chain partners, from manufacturers to logistics and information technology are carefully chosen to ÿt our commitment to quality