Thin Section Bearings

Thin Section Ball Bearings were developed for applications where space limitations are most important. They have an extremely small, predominantly square cross-section. Within each series, the cross-section remains constant giving them the unique description as a constant section bearings. There are basically three types: deep groove radial contact, four point contact, and angular contact. We offer the four point contact type since these are most popular and can support axial loads from both directions as well as radial loads; they thus act in the same way as double row angular contact ball bearings.

Thin Section Bearing Materials

Rings: 52100 or equivalent bearing steel, Hardened Rc 55 Min.

Balls: 52100 or equivalent bearing steel, Hardened Rc 57 Min.

Retainer: Snap-over type brass material

Seals: NBR material (for sealed bearing versions)

Types

Series	Ball Dia. (inch)	Seals
KA	3/16"	No
JA	1/8"	Yes
KC	3/16"	No
JU	3/16"	Yes

In the table is a listing of the thin section bearing products.

3D CAD models are available.

Only products listed in green color are typically in stock.

KA Series Unsealed Bearing Products Listed Below

PART NUMBER	ID (inch)	OD (inch)	Width (inch)	Radial Dynamic Cap. (lbs)	Axial Dynamic Cap. (lbs)	Moment Dynamic Cap. (in-lbs)	Radial Static Cap. (lbs)	Axial Static Cap. (lbs)	Moment Static Cap. (in-lbs)	*Limiting Speed (rpm)	*Maximum Friction Torque (in-oz)	Net Wt. (lbs)
KA020XP0-TPA	2.000	2.500	0.25	514	790	434	680	1710	770	--	--	0.10
KA025XP0-TPA	2.500	3.000	0.25	583	910	601	830	2090	1150	--	--	0.13
KA027XP0-TPA	2.750	3.250	0.25	614	960	690	910	2275	1365	--	--	0.14
KA030XP0-TPA	3.000	3.500	0.25	643	1,010	785	990	2470	1600	--	--	0.15
KA035XP0-TPA	3.500	4.000	0.25	701	1110	986	1140	2850	2130	--	--	0.18
KA040XP0-TPA	4.000	4.500	0.25	756	1210	1205	1290	3220	2740	--	--	0.19
KA042XP0-TPA	4.250	4.750	0.25	783	1260	1321	1370	3410	3070	--	--	0.20
KA045XP0-TPA	4.500	5.000	0.25	809	1310	1441	1440	3600	3420	--	--	0.22
KA047XP0-TPA	4.750	5.250	0.25	834	1350	1565	1520	3790	3790	--	--	0.23
KA050XP0-TPA	5.000	5.500	0.25	859	1400	1693	1590	3980	4180	--	--	0.24
KA055XP0-TPA	5.500	6.000	0.25	908	1480	1959	1750	4360	5020	--	--	0.25
KA060XP0-TPA	6.000	6.500	0.25	955	1570	2240	1900	4740	5930	--	--	0.28
KA065XP0-TPA	6.500	7.000	0.25	1001	1650	2535	2050	5120	6910	--	--	0.30
KA070XP0-TPA	7.000	7.500	0.25	1046	1730	2844	2200	5500	7980	--	--	0.31
KA075XP0-TPA	7.500	8.000	0.25	1089	1810	3165	2350	5880	9120	--	--	0.34
KA080XP0-TPA	8.000	8.500	0.25	1131	1890	3499	2500	6260	10330	--	--	0.38
KA090XP0-TPA	9.000	9.500	0.25	1212	2040	4204	2810	7020	12990	--	--	0.44
KA100XP0-TPA	10.000	10.500	0.25	1289	2180	4956	3110	7780	15940	--	--	0.50
KA110XP0-TPA	11.000	11.500	0.25	1362	2320	5750	3410	8540	19210	--	--	0.52
KA120XP0-TPA	12.000	12.500	0.25	1433	2450	6587	3720	9300	22770	--	--	0.56

JA Series Sealed Bearing Products Listed Below

PART NUMBER	ID (inch)	OD (inch)	Width (inch)	Radial Dynamic Cap. (lbs)	Axial Dynamic Cap. (lbs)	Moment Dynamic Cap. (in-lbs)	Radial Static Cap. (lbs)	Axial Static Cap. (lbs)	Moment Static Cap. (in-lbs)	*Limiting Speed (rpm)	*Maximum Friction Torque (in-oz)	Net Wt. (lbs)
JA020XP0-TPA	2.000	2.500	0.25	514	790	434	680	1,710	770	1500	6	0.10
JA025XP0-TPA	2.500	3.000	0.25	583	910	601	830	2090	1150	1200	8	0.12
JA030XP0-TPA	3.000	3.500	0.25	643	1,010	785	990	2470	1600	830	12	0.14
JA035XP0-TPA	3.500	4.000	0.25	701	1110	986	1140	2850	2130	710	16	0.17
JA040XP0-TPA	4.000	4.500	0.25	756	1210	1205	1290	3220	2740	620	20	0.19
JA042XP0-TPA	4.250	4.750	0.25	783	1260	1321	1370	3410	3070	580	24	0.20
JA045XP0-TPA	4.500	5.000	0.25	809	1310	1441	1440	3600	3420	550	28	0.21
JA047XP0-TPA	4.750	5.250	0.25	834	1350	1565	1520	3790	3790	520	32	0.22
JA050XP0-TPA	5.000	5.500	0.25	859	1400	1693	1590	3980	4180	500	36	0.23
JA055XP0-TPA	5.500	6.000	0.25	908	1480	1959	1750	4360	5020	450	44	0.25
JA060XP0-TPA	6.000	6.500	0.25	955	1570	2240	1900	4740	5930	330	52	0.28
JA065XP0-TPA	6.500	7.000	0.25	1001	1650	2535	2050	5120	6910	300	61	0.30
JA070XP0-TPA	7.000	7.500	0.25	1046	1730	2844	2200	5500	7980	280	70	0.31
JA075XP0-TPA	7.500	8.000	0.25	1089	1810	3165	2350	5880	9120	260	80	0.34

KC Series Unsealed Bearing Products Listed Below

PART NUMBER	ID (inch)	OD (inch)	Width (inch)	Radial Dynamic Cap. (lbs)	Axial Dynamic Cap. (lbs)	Moment Dynamic Cap. (in-lbs)	Radial Static Cap. (lbs)	Axial Static Cap. (lbs)	Moment Static Cap. (in-lbs)	*Limiting Speed (rpm)	*Maximum Friction Torque (in-oz)	Net Wt. (lbs)
KC040XP0-TPA	4.000	4.750	0.375	1417	2210	2326	2100	5260	4600	--	--	0.45
KC045XP0-TPA	4.500	5.250	0.375	1510	2380	2762	2340	5860	5710	--	--	0.48
KC050XP0-TPA	5.000	5.750	0.375	1600	2540	3226	2590	6460	6950	--	--	0.58
KC055XP0-TPA	5.500	6.250	0.375	1687	2690	3717	2830	7960	8300	--	--	0.59
KC060XP0-TPA	6.000	6.750	0.375	1770	2840	4234	3070	7660	9770	--	--	0.63
KC065XP0-TPA	6.500	7.250	0.375	1851	2990	4775	3310	8270	11370	--	--	0.68
KC070XP0-TPA	7.000	7.750	0.375	1931	3130	5341	3550	8870	13080	--	--	0.73
KC075XP0-TPA	7.500	8.250	0.375	2007	3270	5930	3790	9470	14910	--	--	0.78
KC080XP0-TPA	8.000	8.750	0.375	2082	3410	6542	4030	10070	16870	--	--	0.84
KC090XP0-TPA	9.000	9.750	0.375	2226	3670	7830	4510	11270	21130	--	--	0.94
KC100XP0-TPA	10.000	10.750	0.375	2364	3930	9201	4990	12470	25880	--	--	1.06
KC110XP0-TPA	11.000	11.750	0.375	2496	4180	10651	5470	13680	31110	--	--	1.16
KC120XP0-TPA	12.000	12.750	0.375	2622	4420	12174	5950	14880	36830	--	--	1.25
KC140XP0-TPA	14.000	14.750	0.375	2862	4890	15434	6910	17280	49690	--	--	1.52

JU Series Sealed Bearing Products Listed Below

PART NUMBER	ID (inch)	OD (inch)	Width (inch)	Radial Dynamic Cap. (lbs)	Axial Dynamic Cap. (lbs)	Moment Dynamic Cap. (in-lbs)	Radial Static Cap. (lbs)	Axial Static Cap. (lbs)	Moment Static Cap. (in-lbs)	*Limiting Speed (rpm)	*Maximum Friction Torque (in-oz)	Net Wt. (lbs)
JU040XP0-TPA	4.000	4.750	0.50	1417	2210	2326	2100	5260	4600	620	2.9	0.55
JU045XP0-TPA	4.500	5.250	0.50	1510	2380	2762	2340	5860	5710	550	3.5	0.61
JU050XP0-TPA	5.000	5.750	0.50	1600	2540	3226	2590	6460	6950	500	4.3	0.68
JU055XP0-TPA	5.500	6.250	0.50	1687	2690	3717	2830	7060	8300	450	5.1	0.74
JU060XP0-TPA	6.000	6.750	0.50	1770	2840	4234	3070	7660	9770	410	6.1	0.81
JU065XP0-TPA	6.500	7.250	0.50	1851	2990	4775	3310	8270	11370	380	7.0	0.87
JU070XP0-TPA	7.000	7.750	0.50	1931	3130	5341	3550	8870	13080	350	8.1	0.93
JU075XP0-TPA	7.500	8.250	0.50	2007	3270	5930	3790	9470	14910	330	9.2	0.99
JU080XP0-TPA	8.000	8.750	0.50	2082	3410	6542	4030	10070	16870	310	10.4	1.06
JU090XP0-TPA	9.000	9.750	0.50	2226	3670	7830	4510	11270	21130	220	13.0	1.18
JU100XP0-TPA	10.000	10.750	0.50	2364	3930	9201	4990	12470	25880	200	16.0	1.31
JU110XP0-TPA	11.000	11.750	0.50	2496	4180	10651	5470	13680	31110	180	19.2	1.43
JU120XP0-TPA	12.000	12.750	0.50	2622	4420	12174	5950	14880	36830	160	22.8	1.56

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Fort Mill, SC 29708

Customer Service

800-284-9784

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