Medium Duty (Imperial) XWS Series

The XWS Series Spirolox® Retaining Ring is Smalley’s most popular retaining ring series. Smalley engineers have developed the greatest number of standard retaining ring sizes in this series, allowing customers to easily select and order parts for their applications.

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Product Information

The XWS Series Spirolox^® Retaining Ring is Smalley’s most popular retaining ring series. Smalley engineers have developed the greatest number of standard retaining ring sizes in this series, allowing customers to easily select and order parts for their applications. XWS spiral rings easily handle thrust loads imposed by light or medium series bearings.

Standard 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)
XWS-50	0.500	0.467	+0.00/-0.013	0.045	+0.003/-0.005	0.025	±0.002	0.474	±0.002	0.030	+0.003/-0.000	460	2000
XWS-53	0.531	0.498		0.045		0.025		0.505		0.030		490	2130
XWS-55	0.551	0.518		0.045		0.025		0.525		0.030		510	2210
XWS-56	0.562	0.529		0.045		0.025		0.536		0.030		520	2250
XWS-59	0.594	0.561		0.045		0.025		0.569	±0.003	0.030		550	2380
XWS-62	0.625	0.585		0.055		0.025		0.594		0.030		710	2500
XWS-65	0.656	0.617		0.055		0.025		0.625		0.030		740	2630
XWS-66	0.669	0.629		0.055		0.025		0.638		0.030		760	2680
XWS-68	0.687	0.647		0.055		0.025		0.656		0.030		780	2750
XWS-71	0.718	0.679		0.055		0.025		0.687		0.030		810	2880
XWS-75	0.750	0.710		0.065		0.031		0.719		0.036		850	3360
XWS-78	0.781	0.741		0.065		0.031		0.750		0.036		880	3500
XWS-81	0.812	0.771		0.065		0.031		0.781		0.036		920	3640
XWS-84	0.843	0.803		0.065		0.031		0.812		0.036		950	3780
XWS-87	0.875	0.828		0.065		0.031		0.838		0.036		1180	3920
XWS-90	0.906	0.860		0.065		0.031		0.869		0.036		1220	4060
XWS-93	0.937	0.889		0.065		0.031		0.900		0.036		1260	4200
XWS-96	0.968	0.916		0.075		0.037		0.925		0.042		1440	5180
XWS-98	0.984	0.930		0.075		0.037		0.941		0.042		1460	5260
XWS-100	1.000	0.946		0.075		0.037		0.957		0.042		1480	5350
XWS-102	1.023	0.968		0.075		0.037		0.980		0.042		1520	5470
XWS-103	1.031	0.978		0.075		0.037		0.988		0.042		1530	5510
XWS-106	1.062	1.007	+0.00/-0.015	0.075		0.037		1.020	±0.004	0.042		1580	5680
XWS-109	1.093	1.040		0.075		0.037		1.051		0.042		1620	5840
XWS-112	1.125	1.070		0.075		0.037		1.083		0.042		1670	6020
XWS-115	1.156	1.102		0.075		0.037		1.114		0.042		1720	6180
XWS-118	1.188	1.127		0.085		0.043		1.140		0.048	+0.0004/-0.000	2020	7380
XWS-121	1.218	1.159		0.085		0.043		1.170		0.048		2070	7570
XWS-125	1.250	1.188		0.085		0.043		1.202		0.048		2120	7770
XWS-128	1.281	1.221		0.085		0.043		1.233		0.048		2170	7960
XWS-131	1.312	1.251		0.095		0.043		1.264		0.048		2230	8150
XWS-134	1.343	1.282		0.095		0.043		1.295		0.048		2280	8350
XWS-137	1.375	1.308		0.095		0.043		1.323		0.048		2530	8540
XWS-140	1.406	1.340		0.095		0.043		1.354		0.048		2580	8740
XWS-143	1.437	1.370		0.095		0.043		1.385		0.048		2640	8930
XWS-146	1.468	1.402		0.095		0.043		1.416		0.048		2700	9120
XWS-150	1.500	1.433		0.095		0.043		1.448		0.048		2760	9320
XWS-156	1.562	1.490	+0.00/-0.020	0.108		0.049	±0.003	1.507	±0.005	0.056		3090	10100
XWS-157	1.575	1.503		0.108		0.049		1.520		0.056		3120	10190
XWS-162	1.625	1.549		0.108		0.049		1.566		0.056		3450	10510
XWS-168	1.687	1.610		0.118		0.049		1.628		0.056		3580	10910
XWS-175	1.750	1.673		0.118		0.049		1.691		0.056		3710	11310
XWS-177	1.771	1.690		0.118		0.049		1.708		0.056		4010	11450
XWS-181	1.813	1.730		0.118		0.049		1.749		0.056		4100	11720
XWS-187	1.875	1.789		0.128		0.049		1.808		0.056		4510	12120
XWS-193	1.938	1.844		0.128		0.049		1.861		0.056		4660	12530
XWS-196	1.969	1.882		0.128		0.049		1.902		0.056		4730	12730
XWS-200	2.000	1.909		0.128		0.049		1.929		0.056		4950	12930
XWS-206	2.062	1.971		0.128		0.049		1.992	±0.006	0.056		5100	13330
XWS-212	2.125	2.029		0.128		0.049		2.051		0.056		5560	13740
XWS-215	2.156	2.060	+0.000/-0.025	0.138		0.049		2.082		0.056		5640	13940
XWS-216	2.165	2.070		0.138		0.049		2.091		0.056		5660	14000
XWS-218	2.188	2.092		0.138		0.049		2.113		0.056		5720	14150
XWS-225	2.250	2.153		0.138		0.049		2.176		0.056		5890	14550
XWS-231	2.312	2.211		0.138		0.049		2.234		0.056		6370	14950
XWS-236	2.362	2.261		0.138		0.049		2.284		0.056		6510	15270
XWS-237	2.375	2.273		0.138		0.049		2.297		0.056		6550	15360
XWS-243	2.437	2.331		0.148		0.049		2.355		0.056		7060	15760
XWS-250	2.500	2.394		0.148		0.049		2.418		0.056		7250	16160
XWS-255	2.559	2.449		0.148		0.049		2.473		0.056		7780	16550
XWS-256	2.562	2.452		0.148		0.049		2.476		0.056		7790	16560
XWS-262	2.625	2.514		0.148		0.049		2.539		0.056		7980	16970
XWS-268	2.688	2.572		0.158		0.049		2.597		0.056		8550	17380
XWS-275	2.750	2.635	+0.000/-0.030	0.158		0.049		2.660		0.056		8750	17780
XWS-281	2.813	2.696		0.168	+0.004/-0.006	0.049		2.722		0.056		8950	18190
XWS-287	2.875	2.755		0.168		0.049		2.781		0.056		9550	18590
XWS-293	2.937	2.817		0.168		0.049		2.843		0.056		9760	18990
XWS-295	2.952	2.831		0.168		0.049		2.858		0.056		9810	19090
XWS-300	3.000	2.877		0.168		0.061		2.904		0.068	+0.005/-0.000	10180	24150
XWS-306	3.062	2.938		0.168		0.061		2.966		0.068		10390	24650
XWS-312	3.125	3.000		0.178		0.061		3.027		0.068		10820	25150
XWS-314	3.149	3.023		0.178		0.061		3.051		0.068		10910	25350
XWS-318	3.187	3.061		0.178		0.061		3.089		0.068		11040	25650
XWS-325	3.250	3.121		0.178		0.061		3.150		0.068		11490	26160
XWS-331	3.312	3.180		0.188		0.061		3.208		0.068		12170	26660
XWS-334	3.343	3.210		0.188		0.061		3.239		0.068		12290	26910
XWS-337	3.375	3.242		0.188		0.061		3.271		0.068		12410	27170
XWS-343	3.437	3.301		0.188		0.061		3.331		0.068		12880	27660
XWS-350	3.500	3.363	+0.000/-0.040	0.188		0.061		3.394		0.068		13110	28170
XWS-354	3.543	3.402		0.198		0.061		3.433		0.068		13770	28520
XWS-356	3.562	3.422		0.198		0.061		3.452		0.068		13850	28670
XWS-362	3.625	3.483		0.198		0.061		3.515		0.068		14090	29180
XWS-368	3.687	3.543		0.198		0.061		3.575		0.068		14600	29680
XWS-374	3.740	3.597		0.198		0.061		3.628		0.068		14800	30100
XWS-375	3.750	3.606		0.198		0.061		3.638		0.068		14840	30180
XWS-381	3.812	3.668		0.198		0.061		3.700		0.068		15090	30680
XWS-387	3.875	3.724		0.208		0.061		3.757		0.068		16160	31190
XWS-393	3.938	3.784		0.208		0.061		3.820		0.068		16420	31700
XWS-400	4.000	3.842		0.218		0.061		3.876		0.068		17530	32200
XWS-406	4.063	3.906		0.218		0.061		3.939		0.068		17810	32700
XWS-412	4.125	3.967		0.218		0.061		4.000		0.068		18080	33200
XWS-413	4.134	3.975		0.218		0.061		4.010		0.068		18120	33270
XWS-418	4.188	4.030		0.218		0.061		4.058		0.068		19240	33710
XWS-425	4.250	4.084		0.228		0.061		4.120		0.068		19530	34210
XWS-431	4.312	4.147		0.228		0.061		4.182		0.068		19810	34710
XWS-433	4.331	4.164		0.228		0.061		4.200		0.068		19900	34860
XWS-437	4.375	4.208		0.228		0.061		4.245		0.068		20100	35210
XWS-443	4.437	4.271		0.228		0.061		4.307		0.068		20390	35710
XWS-450	4.500	4.326		0.238		0.061		4.364		0.068		21630	36220
XWS-456	4.562	4.384		0.250		0.072	±0.004	4.422		0.079		22570	43340
XWS-462	4.625	4.447		0.250		0.072		4.485		0.079		22890	43940
XWS-468	4.687	4.508		0.250		0.072		4.547		0.079		23190	44530
XWS-472	4.724	4.546		0.250		0.072		4.584		0.079		23370	44880
XWS-475	4.750	4.571		0.250		0.072		4.610		0.079		23500	45130
XWS-481	4.812	4.633		0.250		0.072		4.672		0.079		23810	45720
XWS-487	4.875	4.695		0.250		0.072		4.735		0.079		24120	46310
XWS-493	4.937	4.757	+0.000/-0.050	0.250		0.072		4.797		0.079		24430	46900
XWS-500	5.000	4.820		0.250		0.072		4.856		0.079		25450	47500
XWS-511	5.118	4.934		0.250		0.072		4.974		0.079		26050	48620
XWS-512	5.125	4.939		0.250		0.072		4.981		0.079		26080	48690
XWS-525	5.250	5.064		0.250		0.072		5.107	±0.007	0.079		26720	49880
XWS-537	5.375	5.187		0.250		0.072		5.228		0.079		28120	51060
XWS-550	5.500	5.308		0.250		0.072		5.353		0.079		28770	52250
XWS-551	5.511	5.320		0.250		0.072		5.364		0.079		28830	52360
XWS-562	5.625	5.433		0.250		0.072		5.478		0.079		29420	53440
XWS-575	5.750	5.550		0.250		0.072		5.597		0.079		31300	54630
XWS-587	5.875	5.674		0.250		0.072		5.722		0.079		31980	55810
XWS-590	5.905	5.705		0.250		0.072		5.752		0.079		32140	56100
XWS-600	6.000	5.798		0.250		0.072		5.847		0.079		32660	57000
XWS-612	6.125	5.903		0.312	0.004/-0.008	0.086		5.953	±0.008	0.094	+0.006/-0.000	37230	69500
XWS-625	6.250	6.026	+0.000/-0.060	0.312		0.086		6.078		0.094		37990	70920
XWS-629	6.299	6.076		0.312		0.086		6.127		0.094		38290	71480
XWS-637	6.375	6.152		0.312		0.086		6.203		0.094		38750	72340
XWS-650	6.500	6.274		0.312		0.086		6.328		0.094		39510	73760
XWS-662	6.625	6.390		0.312		0.086		6.443		0.094		42620	75180
XWS-675	6.750	6.513		0.312		0.086		6.568		0.094		43420	76600
XWS-687	6.875	6.638		0.312		0.086		6.693		0.094		44220	78010
XWS-700	7.000	6.761		0.312		0.086		6.818		0.094		45030	79430
XWS-712	7.125	6.877		0.312		0.086		6.933		0.094		48350	80850
XWS-725	7.250	6.999		0.312		0.086		7.058		0.094		49200	82270
XWS-737	7.375	7.125		0.312		0.086		7.183		0.094		50050	83690
XWS-750	7.500	7.250	+0.000/-0.070	0.312		0.086		7.308		0.094		50890	85110
XWS-762	7.625	7.363		0.312		0.086		7.423		0.094		54440	86520
XWS-775	7.750	7.486		0.312		0.086		7.548		0.094		55330	87940
XWS-787	7.875	7.611		0.312		0.086		7.673		0.094		56220	89360
XWS-800	8.000	7.734		0.312		0.086		7.798		0.094		57110	90780
XWS-825	8.250	7.972		0.375		0.086		8.038		0.094		61820	93620
XWS-850	8.500	8.220		0.375		0.086		8.288		0.094		63690	96450
XWS-875	8.750	8.459		0.375		0.086		8.528		0.094		68650	99290
XWS-900	9.000	8.707		0.375		0.086		8.778		0.094		70620	102130
XWS-925	9.250	8.945		0.375		0.086		9.018		0.094		75850	104960
XWS-950	9.500	9.194		0.375		0.086		9.268		0.094		77900	107800
XWS-975	9.750	9.432		0.375		0.086		9.508		0.094		83390	110640
XWS-1000	10.000	9.680		0.375		0.086		9.758		0.094		85530	113470
XWS-1025	10.250	9.918		0.375		0.086		9.998		0.094		91290	116310
XWS-1050	10.500	10.166		0.375		0.086		10.248		0.094		93520	119150
XWS-1075	10.750	10.405		0.375		0.086		10.488		0.094		99540	121990
XWS-1100	11.000	10.653		0.375		0.086		10.738		0.094		101860	124820

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.

At TFC we realise that Quality runs through the entire business, not just our products. We have continually invested in the right people to provide the superior market knowledge and customer service.

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