Inch Open Type X Thin Section Bearings

The X-Type, or 4-point contact, ball bearing is ideal for moment loading. X-Type bearings are designed with gothic arch raceways creating 4 contact points between the balls and the raceways. This design is excellent for moment loading and reversing axial loading. The X-Type bearing can be used for other light loading conditions, but is not recommended in place of the C- or A-Type bearing for pure radial loads. Contact Silverthin™ for information on combined load and limiting speeds.

Loading Condition
Radial	Axial	Moment	Reversing Axial	Combined Radial Thrust
Poor	Good,	Excellent	Excellent	Poor

Nylon; one piece snapover separator standard

3/32" balls

Load capacities are not additive
The maximum shaft or housing fillet radius that the bearing corners will clear for this series is 0.015"
Race Width Tolerance: +0.000 -0.005"

SAA SERIES 3/16" x 3/16"
SILVERTHIN PART NUMBER	DIMENSION IN INCHES				CAPACITIES IN POUNDS / IN-LBS						APPROX WEIGHT POUNDS
	BORE	OUTSIDE DIA	LAND DIA	LAND DIA	RADIAL		THRUST		MOMENT
	B	D	L₁	L₂	STATIC	DYN	STATIC	DYN	STATIC	DYN
SAA10XL0	1.000	1.375	1.140	1.235	290	245	730	370	170	110	0.03
SAA15XL0	1.500	1.875	1.640	1.735	400	295	1,000	460	340	185	0.04
SAA17XL0	1.750	2.125	1.890	1.985	460	320	1,140	500	440	230	0.04

Brass; snapover separator standard

1/8" balls

Load capacities are not additive
The maximum shaft or housing fillet radius that the bearing corners will clear for this series is 0.025"
Race Width Tolerance: +0.000 -0.005"

SA SERIES 1/4" x 1/4"
SILVERTHIN PART NUMBER	DIMENSION IN INCHES				CAPACITIES IN POUNDS / IN-LBS						APPROX WEIGHT POUNDS
	BORE	OUTSIDE DIA	LAND DIA	LAND DIA	RADIAL		THRUST		MOMENT
	B	D	L₁	L₂	STATIC	DYN	STATIC	DYN	STATIC	DYN
SA020XP0	2.000	2.500	2.186	2.314	680	515	1,710	790	770	435	0.10
SA025XP0	2.500	3.000	2.686	2.814	830	585	2,090	910	1,150	600	0.13
SA030XP0	3.000	3.500	3.186	3.314	990	645	2,470	1,010	1,600	785	0.15
SA035XP0	3.500	4.000	3.686	3.814	1,140	700	2,850	1,110	2,130	985	0.18
SA040XP0	4.000	4.500	4.186	4.314	1,290	755	3,220	1,210	2,740	1,205	0.19
SA042XP0	4.250	4.750	4.436	4.564	1,370	785	3,410	1,260	3,070	1,320	0.20
SA045XP0	4.500	5.000	4.686	4.814	1,440	810	3,600	1,310	3,420	1,440	0.22
SA047XP0	4.750	5.250	4.936	5.064	1,520	835	3,790	1,350	3,790	1,565	0.23
SA050XP0	5.000	5.500	5.186	5.314	1,590	860	3,980	1,400	4,180	1,695	0.24
SA055XP0	5.500	6.000	5.686	5.814	1,750	910	4,360	1,480	5,020	1,960	0.25
SA060XP0	6.000	6.500	6.186	6.314	1,900	955	4,740	1,570	5,930	2,240	0.28
SA065XP0	6.500	7.000	6.686	6.814	2,050	1,000	5,120	1,650	6,910	2,535	0.30
SA070XP0	7.000	7.500	7.186	7.314	2,200	1,045	5,500	1,730	7,980	2,845	0.31
SA075XP0	7.500	8.000	7.686	7.814	2,350	1,090	5,880	1,810	9,120	3,165	0.34
SA080XP0	8.000	8.500	8.186	8.314	2,500	1,130	6,260	1,890	10,330	3,500	0.38
SA090XP0	9.000	9.500	9.186	9.314	2,810	1,210	7,020	2,040	12,990	4,205	0.44
SA100XP0	10.000	10.500	10.186	10.314	3,110	1,290	7,780	2,180	15,940	4,955	0.50
SA110XP0	11.000	11.500	11.186	11.314	3,410	1,360	8,540	2,320	19,210	5,750	0.52
SA120XP0	12.000	12.500	12.186	12.314	3,720	1,435	9,300	2,450	22,770	6,585	0.56

Brass; snapover separator standard

5/32" balls

Load capacities are not additive
The maximum shaft or housing fillet radius that the bearing corners will clear for this series is 0.040"
Race Width Tolerance: +0.000 -0.005"

SB SERIES 5/16" x 5/16"
SILVERTHIN PART NUMBER	DIMENSION IN INCHES				CAPACITIES IN POUNDS / IN-LBS						APPROX WEIGHT POUNDS
	BORE	OUTSIDE DIA	LAND DIA	LAND DIA	RADIAL		THRUST		MOMENT
	B	D	L₁	L₂	STATIC	DYN	STATIC	DYN	STATIC	DYN
SB020XP0	2.000	2.625	2.231	2.393	930	760	2,340	1,130	1,080	660	0.16
SB025XP0	2.500	3.125	2.731	2.893	1,140	850	2,840	1,290	1,600	895	0.19
SB030XP0	3.000	3.625	3.231	3.393	1,340	935	3,350	1,440	2,220	1,160	0.24
SB035XP0	3.500	4.125	3.731	3.893	1,540	1,015	3,860	1,590	2,940	1,450	0.29
SB040XP0	4.000	4.625	4.231	4.393	1,750	1,090	4,370	1,720	3,770	1,765	0.30
SB042XP0	4.250	4.875	4.481	4.643	1,830	1,120	4,570	1,780	4,170	1,915	0.31
SB045XP0	4.500	5.125	4.731	4.893	1,950	1,165	4,880	1,850	4,690	2,105	0.33
SB047XP0	4.750	5.375	4.981	5.143	2,030	1,195	5,080	1,900	5,140	2,265	0.34
SB050XP0	5.000	5.625	5.231	5.393	2,150	1,235	5,380	1,980	5,720	2,465	0.38
SB055XP0	5.500	6.125	5.731	5.893	2,360	1,305	5,890	2,100	6,850	2,845	0.41
SB060XP0	6.000	6.625	6.231	6.393	2,560	1,370	6,400	2,220	8,080	3,245	0.44
SB065XP0	6.500	7.125	6.731	6.893	2,760	1,435	6,910	2,340	9,410	3,670	0.47
SB070XP0	7.000	7.625	7.231	7.393	2,970	1,500	7,420	2,450	10,850	4,110	0.50
SB075XP0	7.500	8.125	7.731	7.893	3,170	1,560	7,920	2,560	12,380	4,570	0.53
SB080XP0	8.000	8.625	8.231	8.393	3,370	1,620	8,430	2,670	14,020	5,045	0.57
SB090XP0	9.000	9.625	9.231	9.393	3,780	1,730	9,450	2,880	17,600	6,050	0.66
SB100XP0	10.000	10.625	10.231	10.393	4,190	1,840	10,460	3,080	21,580	7,120	0.73
SB110XP0	11.000	11.625	11.231	11.393	4,590	1,945	11,480	3,280	25,970	8,255	0.75
SB120XP0	12.000	12.625	12.231	12.393	5,000	2,045	12,500	3,470	30,770	9,445	0.83
SB140XP0	14.000	14.625	14.231	14.393	5,810	2,235	14,530	3,840	41,580	11,995	1.05
SB160XP0	16.000	16.625	16.231	16.393	6,620	2,410	16,560	4,190	54,020	14,750	1.20
SB180XP0	18.000	18.625	18.231	18.393	7,440	2,575	18,590	4,520	68,090	17,695	1.35
SB200XP0	20.000	20.625	20.231	20.393	8,250	2,730	20,620	4,850	83,780	20,815	1.50

Brass; snapover separator standard

3/16" balls

Load capacities are not additive
The maximum shaft or housing fillet radius that the bearing corners will clear for this series is 0.040"
Race Width Tolerance: +0.000 -0.005"

SC SERIES 3/8" x 3/8"
SILVERTHIN PART NUMBER	DIMENSION IN INCHES				CAPACITIES IN POUNDS / IN-LBS						APPROX WEIGHT POUNDS
	BORE	OUTSIDE DIA	LAND DIA	LAND DIA	RADIAL		THRUST		MOMENT
	B	D	L₁	L₂	STATIC	DYN	STATIC	DYN	STATIC	DYN
SC040XP0	4.000	4.750	4.277	4.473	2,100	1,415	5,260	2,210	4,600	2,325	0.45
SC042XP0	4.250	5.000	4.527	4.723	2,220	1,465	5,560	2,290	5,140	2,540	0.47
SC045XP0	4.500	5.250	4.777	4.973	2,340	1,510	5,860	2,380	5,710	2,760	0.48
SC047XP0	4.750	5.500	5.027	5.223	2,460	1,555	6,160	2,460	6,320	2,990	0.50
SC050XP0	5.000	5.750	5.277	5.473	2,590	1,600	6,460	2,540	6,950	3,225	0.58
SC055XP0	5.500	6.250	5.777	5.973	2,830	1,685	7,060	2,690	8,300	3,715	0.59
SC060XP0	6.000	6.750	6.277	6.473	3,070	1,770	7,660	2,840	9,770	4,235	0.63
SC065XP0	6.500	7.250	6.777	6.973	3,310	1,850	8,270	2,990	11,370	4,775	0.68
SC070XP0	7.000	7.750	7.277	7.473	3,550	1,930	8,870	3,130	13,080	5,340	0.73
SC075XP0	7.500	8.250	7.777	7.973	3,790	2,005	9,470	3,270	14,910	5,930	0.78
SC080XP0	8.000	8.750	8.277	8.473	4,030	2,080	10,070	3,410	16,870	6,540	0.84
SC090XP0	9.000	9.750	9.277	9.473	4,510	2,225	11,270	3,670	21,130	7,830	0.94
SC100XP0	10.000	10.750	10.277	10.473	4,990	2,365	12,470	3,930	25,880	9,200	1.06
SC110XP0	11.000	11.750	11.277	11.473	5,470	2,495	13,680	4,180	31,110	10,650	1.16
SC120XP0	12.000	12.750	12.277	12.473	5,950	2,620	14,880	4,420	36,830	12,175	1.25
SC140XP0	14.000	14.750	14.277	14.473	6,910	2,860	17,280	4,890	49,690	15,435	1.52
SC160XP0	16.000	16.750	16.277	16.473	7,880	3,085	19,690	5,330	64,480	18,955	1.73
SC180XP0	18.000	18.750	18.277	18.473	8,840	3,295	22,090	5,760	81,190	22,710	1.94
SC200XP0	20.000	20.750	20.277	20.473	9,800	3,490	24,500	6,170	99,830	26,695	2.16
SC250XP0	25.000	25.750	25.277	25.473	12,200	3,940	30,510	7,140	154,800	37,520	2.69
SC300XP0	30.000	30.750	30.277	30.473	14,610	4,340	36,520	8,050	221,900	49,435	3.21

Brass; snapover separator standard

1/4" balls

Load capacities are not additive
The maximum shaft or housing fillet radius that the bearing corners will clear for this series is 0.060"
Race Width Tolerance: +0.000 -0.005"

SD SERIES 1/2" x 1/2"
SILVERTHIN PART NUMBER	DIMENSION IN INCHES				CAPACITIES IN POUNDS / IN-LBS						APPROX WEIGHT POUNDS
	BORE	OUTSIDE DIA	LAND DIA	LAND DIA	RADIAL		THRUST		MOMENT
	B	D	L₁	L₂	STATIC	DYN	STATIC	DYN	STATIC	DYN
SD040XP0	4.000	5.000	4.370	4.630	3,080	2,310	7,700	3,520	6,930	3,900	0.78
SD042XP0	4.250	5.250	4.620	4.880	3,190	2,355	7,980	3,600	7,580	4,195	0.83
SD045XP0	4.500	5.500	4.870	5.130	3,420	2,455	8,550	3,770	8,550	4,600	0.88
SD047XP0	4.750	5.750	5.120	5.380	3,530	2,495	8,840	3,860	9,280	4,915	0.94
SD050XP0	5.000	6.000	5.370	5.630	3,760	2,590	9,410	4,020	10,350	5,350	1.00
SD055XP0	5.500	6.500	5.870	6.130	4,100	2,725	10,260	4,260	12,310	6,135	1.06
SD060XP0	6.000	7.000	6.370	6.630	4,450	2,855	11,120	4,490	14,450	6,960	1.16
SD065XP0	6.500	7.500	6.870	7.130	4,790	2,980	11,970	4,720	16,760	7,825	1.22
SD070XP0	7.000	8.000	7.370	7.630	5,130	3,105	12,830	4,940	19,240	8,730	1.31
SD075XP0	7.500	8.500	7.870	8.130	5,470	3,220	13,680	5,160	21,890	9,670	1.41
SD080XP0	8.000	9.000	8.370	8.630	5,810	3,340	14,540	5,370	24,710	10,645	1.53
SD090XP0	9.000	10.000	9.370	9.630	6,500	3,560	16,250	5,790	30,870	12,695	1.72
SD100XP0	10.000	11.000	10.370	10.630	7,180	3,775	17,960	6,190	37,710	14,870	1.88
SD110XP0	11.000	12.000	11.370	11.630	7,870	3,980	19,670	6,570	45,230	17,175	2.06
SD120XP0	12.000	13.000	12.370	12.630	8,550	4,180	21,380	6,950	53,440	19,590	2.25
SD140XP0	14.000	15.000	14.370	14.630	9,920	4,550	24,800	7,670	71,910	24,755	2.73
SD160XP0	16.000	17.000	16.370	16.630	11,290	4,900	28,220	8,360	93,110	30,325	3.10
SD180XP0	18.000	19.000	18.370	18.630	12,650	5,225	31,640	9,030	117,000	36,270	3.48
SD200XP0	20.000	21.000	20.370	20.630	14,020	5,535	35,060	9,670	143,700	42,560	3.85
SD250XP0	25.000	26.000	25.370	25.630	17,440	6,235	43,610	11,180	222,400	59,650	4.79
SD300XP0	30.000	31.000	30.370	30.630	20,860	6,855	52,160	12,600	318,100	78,445	5.73

Brass; snapover separator standard

3/8" balls

Load capacities are not additive
The maximum shaft or housing fillet radius that the bearing corners will clear for this series is 0.080"
Race Width Tolerance: +0.000 -0.005"

SF SERIES 3/4" x 3/4"
SILVERTHIN PART NUMBER	DIMENSION IN INCHES				CAPACITIES IN POUNDS / IN-LBS						APPROX WEIGHT POUNDS
	BORE	OUTSIDE DIA	LAND DIA	LAND DIA	RADIAL		THRUST		MOMENT
	B	D	L₁	L₂	STATIC	DYN	STATIC	DYN	STATIC	DYN
SF040XP0	4.000	5.500	4.555	4.945	5,360	4,665	13,400	6,830	12,730	8,310	1.90
SF042XP0	4.250	5.750	4.805	5.195	5,640	4,795	14,110	7,070	14,110	8,995	2.00
SF045XP0	4.500	6.000	5.060	5.445	5,930	4,925	14,810	7,300	15,550	9,695	2.10
SF047XP0	4.750	6.250	5.305	5.695	6,210	5,050	15,520	7,530	17,070	10,415	2.20
SF050XP0	5.000	6.500	5.555	5.945	6,490	5,170	16,220	7,760	18,660	11,155	2.30
SF055XP0	5.500	7.000	6.055	6.445	7,050	5,415	17,630	8,200	22,040	12,695	2.50
SF060XP0	6.000	7.500	6.555	6.945	7,620	5,650	19,050	8,630	25,710	14,310	2.70
SF065XP0	6.500	8.000	7.055	7.445	8,180	5,880	20,460	9,050	29,660	15,995	2.90
SF070XP0	7.000	8.500	7.555	7.945	8,750	6,105	21,870	9,460	33,890	17,745	3.20
SF075XP0	7.500	9.000	8.055	8.445	9,310	6,325	23,280	9,870	38,410	19,570	3.40
SF080XP0	8.000	9.500	8.555	8.945	9,880	6,535	24,690	10,260	43,200	21,455	3.50
SF090XP0	9.000	10.500	9.555	9.945	11,000	6,945	27,510	11,030	53,640	25,410	3.90
SF100XP0	10.000	11.500	10.555	10.945	12,130	7,340	30,330	11,770	65,210	29,610	4.30
SF110XP0	11.000	12.500	11.555	11.945	13,260	7,720	33,150	12,490	77,910	34,030	4.80
SF120XP0	12.000	13.500	12.555	12.945	14,390	8,085	35,970	13,190	91,730	38,665	5.20
SF140XP0	14.000	15.500	14.555	14.945	16,650	8,775	41,620	14,530	122,800	48,555	6.00
SF160XP0	16.000	17.500	16.555	16.945	18,900	9,420	47,260	15,820	158,300	59,200	7.10
SF180XP0	18.000	19.500	18.555	18.945	21,160	10,030	52,900	17,060	198,400	70,535	7.90
SF200XP0	20.000	21.500	20.555	20.945	23,420	10,600	58,550	18,250	243,000	82,530	8.90
SF250XP0	25.000	26.500	25.555	25.945	29,060	11,910	72,650	21,070	374,200	115,035	10.90
SF300XP0	30.000	31.500	30.555	30.945	34,700	13,065	86,760	23,720	533,600	150,710	13.00
SF350XP0	35.000	36.500	35.555	35.945	40,350	14,100	100,900	26,220	721,200	189,105	15.10

Brass; snapover separator standard

1/2" balls

Load capacities are not additive
The maximum shaft or housing fillet radius that the bearing corners will clear for this series is 0.080"
Race Width Tolerance: +0.000 -0.005"

SG SERIES 1" x 1"
SILVERTHIN PART NUMBER	DIMENSION IN INCHES				CAPACITIES IN POUNDS / IN-LBS						APPROX WEIGHT POUNDS
	BORE	OUTSIDE DIA	LAND DIA	LAND DIA	RADIAL		THRUST		MOMENT
	B	D	L₁	L₂	STATIC	DYN	STATIC	DYN	STATIC	DYN
SG040XP0	4.000	6.000	4.742	5.258	8,210	7,980	20,520	11,260	20,520	14,965	3.60
SG042XP0	4.250	6.250	4.992	5.508	8,210	7,915	20,520	11,260	21,550	15,590	3.80
SG045XP0	4.500	6.500	5.242	5.758	8,760	8,205	21,890	11,750	24,080	16,930	4.00
SG047XP0	4.750	6.750	5.492	6.008	9,300	8,485	23,260	12,230	26,740	18,305	4.10
SG050XP0	5.000	7.000	5.742	6.258	9,850	8,760	24,620	12,710	29,550	19,720	4.30
SG055XP0	5.500	7.500	6.242	6.758	10,400	8,980	25,990	13,180	33,790	21,895	4.70
SG060XP0	6.000	8.000	6.742	7.258	11,490	9,505	28,730	14,090	40,220	24,955	5.10
SG065XP0	6.500	8.500	7.242	7.758	12,040	9,715	30,100	14,530	45,140	27,325	5.40
SG070XP0	7.000	9.000	7.742	8.258	13,130	10,210	32,830	15,400	52,530	30,635	5.80
SG075XP0	7.500	9.500	8.242	8.758	13,680	10,410	34,200	15,820	58,140	33,195	6.10
SG080XP0	8.000	10.000	8.742	9.258	14,770	10,880	36,940	16,650	66,480	36,745	6.50
SG090XP0	9.000	11.000	9.742	10.258	16,420	11,525	41,040	17,870	82,080	43,240	7.20
SG100XP0	10.000	12.000	10.742	11.258	18,060	12,145	45,140	19,040	99,320	50,125	7.90
SG110XP0	11.000	13.000	11.742	12.258	19,700	12,740	49,250	20,180	118,200	57,345	8.60
SG120XP0	12.000	14.000	12.742	13.258	21,340	13,315	53,350	21,280	138,700	64,935	9.30
SG140XP0	14.000	16.000	14.742	15.258	24,620	14,405	61,560	23,410	184,700	81,055	10.80
SG160XP0	16.000	18.000	16.742	17.258	27,910	15,425	69,770	25,450	237,200	98,375	12.30
SG180XP0	18.000	20.000	18.742	19.258	31,190	16,385	77,980	27,410	296,300	116,795	13.70
SG200XP0	20.000	22.000	20.742	21.258	34,470	17,295	86,180	29,300	362,000	136,240	15.80
SG250XP0	25.000	27.000	25.742	26.258	42,680	19,360	106,700	33,780	554,900	188,840	19.50
SG300XP0	30.000	32.000	30.742	31.258	50,890	21,200	127,200	37,980	788,800	246,540	23.30
SG350XP0	35.000	37.000	35.742	36.258	59,100	22,845	147,700	41,970	1,064,000	308,525	27.10

Inch Open Type X Thin Section Bearings

SAA SERIES 3/16" x 3/16"

SA SERIES 1/4" x 1/4"

SB SERIES 5/16" x 5/16"

SC SERIES 3/8" x 3/8"

SD SERIES 1/2" x 1/2"

SF SERIES 3/4" x 3/4"

SG SERIES 1" x 1"

Part Number Cross Reference

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