CRBS Slim Type Rotary Cross Roller Bearings

The A Series is a thin section bearing with a bore diameter ranging from 2.000 to 12.00 inches and a cross secton of 1/4 inches.

The A Series bearings are available from stock in three configurations to support various load scenarios : radial contact (Type C), angular contact (Type A), and four-point contact (Type X).

Standard Product Engineering and Manufacturing Data

• ABMA-ABEC-1F Precision or better
• ABMA Standard 26.2 internal geometry
• Ring material
  • 52100 vacuum degassed or spec 6440/6441
  • ASTM A295 AMS 6440/6441
  • AISI 440c
  • 17-4 ph stainless steel
  • M-50
  • Ceramic and other special materials
• Heat treated rings Rc 60-62 hardened and stress relieved
• Balls
  • 52100 grade 24/25 ABMA STD 10
  • Ceramic balls (silicon nitride)
  • 440c stainless steel balls
• Retainers
  • Specification ASTM B-36 brass
  • Nylon, phenolic, steel or special materials
  • TDC, silver TIC, tin or other special platings
• Seals
  • Buna-n stainless steel backed and molded
  • Viton
  • Teflon and others

Technical Specifications

Type A Interchange
Angular Contact

A deep groove bearing with reduced shoulder on one side of inner or outer race ball path. Snapover assembly permits use of a one-piece circular pocket ring separator and greater ball complement. These bearings will accept radial load and single direction thrust load and are normally used in conjunction with another bearing of similar construction. Type A bearings require the application of thrust to establish contact angle. Stock bearings are individual units and when purchased as such must be adjusted at installation to desired running clearance or preload. When required, matched sets are available. McFarland Associates also offers matched spacers for applications requiring extra precision.

A SERIES - 1/4" x 1/4"
Industry Part No	McFarland Associates Part No	Dimensions (in)					Capacities (lbs)1				Weight (lbs)
		Bore	Outside Diameter	Land Dia L1	Land Dia L2	C'Bore Dia L3	Radial		Thrust
							Static2	Dyn	Static2	Dyn
KA020AR0	AA020AR0	2.000	2.500	2.186	2.314	2.369	790	330	2,280	960	.10
KA025AR0	AA025AR0	2.500	3.000	2.686	2.814	2.869	960	380	2,780	1,100	.12
KA030AR0	AA030AR0	3.000	3.500	3.186	3.314	3.367	1,140	430	3,290	1,230	.14
KA035AR0	AA035AR0	3.500	4.000	3.686	3.814	3.867	1,310	470	3,790	1,350	.17
KA040AR0	AA040AR0	4.000	4.500	4.186	4.314	4.367	1,490	510	4,300	1,470	.19
KA042AR0	AA042AR0	4.250	4.750	4.436	4.564	4.615	1,580	530	4,550	1,530	.20
KA045AR0	AA045AR0	4.500	5.000	4.686	4.814	4.865	1,660	550	4,810	1,580	.21
KA047AR0	AA047AR0	4.750	5.250	4.936	5.064	5.115	1,750	570	5,060	1,640	.22
KA050AR0	AA050AR0	5.000	5.500	5.186	5.314	5.365	1,840	590	5,310	1,690	.23
KA055AR0	AA055AR0	5.500	6.000	5.686	5.814	5.863	2,020	620	5,820	1,800	.25
KA060AR0	AA060AR0	6.000	6.500	6.186	6.314	6.363	2,190	660	6,320	1,900	.28
KA065AR0	AA065AR0	6.500	7.000	6.686	6.814	6.861	2,370	690	6,830	2,000	.30
KA070AR0	AA070AR0	7.000	7.500	7.186	7.314	7.361	2,540	730	7,340	2,100	.32
KA075AR0	AA075AR0	7.500	8.000	7.686	7.814	7.861	2,720	760	7,840	2,190	.34
KA080AR0	AA080AR0	8.000	8.500	8.186	8.314	8.359	2,890	790	8,350	2,280	.36
KA090AR0	AA090AR0	9.000	9.500	9.186	9.314	9.357	3,240	850	9,360	2,470	.41
KA100AR0	AA100AR0	10.000	10.500	10.186	10.314	10.355	3,590	910	10,370	2,640	.45
KA110AR0	AA110AR0	11.000	11.500	11.186	11.314	11.353	3,940	970	11,380	2,810	.50
KA120AR0	AA120AR0	12.000	12.500	12.186	12.314	12.349	4,290	1,030	12,390	2,970	.54

¹ Capacities listed are not simultaneous. Dynamic capacities are based upon 1 million revolutions of L10 life.
² Static capacities are non-brinell limits based on rigid support from the shaft and housing.

Type X Interchange
Four-Point Contact

A Conrad assembled bearing designed for applications involving multiple loads. Unique internal geometry permits application of radial load, thrust load in either direction, and moment load, individually or in any combination. A single four-point contact bearing may replace two bearings in many applications.

               

A SERIES - 1/4" x 1/4"
Industry Part No	McFarland Associates Part No	Dimensions (in)				Capacities1						Weight (lbs)
		Bore	Outside Diameter	Land DiaL1	Land Dia L2	Radial (lbs)		Thrust (lbs)		Moment (lbs-in)
						Static2	Dyn	Static2	Dyn	Static2	Dyn
KA020XP0	A020XP0	2.000	2.500	2.186	2.314	680	320	1,710	790	770	360	.10
KA025XP0	A025XP0	2.500	3.000	2.686	2.814	830	360	2,090	910	1,150	500	.13
KA030XP0	A030XP0	3.000	3.500	3.186	3.314	990	410	2,470	1,010	1,600	660	.15
KA035XP0	A035XP0	3.500	4.000	3.686	3.814	1,140	450	2,850	1,110	2,130	840	.18
KA040XP0	A040XP0	4.000	4.500	4.186	4.314	1,290	480	3,220	1,210	2,740	1,030	.19
KA042XP0	A042XP0	4.250	4.750	4.436	4.564	1,370	500	3,410	1,260	3,070	1,130	.20
KA045XP0	A045XP0	4.500	5.000	4.686	4.814	1,440	520	3,600	1,310	3,420	1,240	.22
KA047XP0	A047XP0	4.750	5.250	4.936	5.064	1,520	540	3,790	1,350	3,790	1,350	.23
KA050XP0	A050XP0	5.000	5.500	5.186	5.314	1,590	560	3,980	1,400	4,180	1,460	.24
KA055XP0	A055XP0	5.500	6.000	5.686	5.814	1,750	590	4,360	1,480	5,020	1,700	.25
KA060XP0	A060XP0	6.000	6.500	6.186	6.314	1,900	630	4,740	1,570	5,930	1,960	.28
KA065XP0	A065XP0	6.500	7.000	6.686	6.814	2,050	660	5,120	1,650	6,910	2,230	.30
KA070XP0	A070XP0	7.000	7.500	7.186	7.314	2,200	690	5,500	1,730	7,980	2,510	.31
KA075XP0	A075XP0	7.500	8.000	7.686	7.814	2,350	720	5,880	1,810	9,120	2,800	.34
KA080XP0	A080XP0	8.000	8.500	8.186	8.314	2,500	750	6,260	1,890	10,330	3,110	.38
KA090XP0	A090XP0	9.000	9.500	9.186	9.314	2,810	810	7,020	2,040	12,990	3,770	.44
KA100XP0	A100XP0	10.000	10.500	10.186	10.314	3,110	870	7,780	2,180	15,940	4,470	.50
KA110XP0	A110XP0	11.000	11.500	11.186	11.314	3,410	930	8,540	2,320	19,210	5,220	.52
KA120XP0	A120XP0	12.000	12.500	12.186	12.314	3,720	980	9,300	2,450	22,770	6,010	.56

¹ Capacities listed are not simultaneous. Dynamic capacities are based upon 1 million revolutions of L10 life.
² Static capacities are non-brinell limits based on rigid support from the shaft and housing.

Type C Interchange
Radial Contact

A Conrad assembled bearing designed primarily for application of radial either direction – often used in conjunction with another bearing.

A SERIES - 1/4 x 1/4
Industry Part No	McFarland Associates Part No	Dimensions (in)				Radial Capacity (lbs)1		Weight (lbs)
		Bore	Outside Diameter	Land Dia L1	Land Dia L2	Static2	Dynamic
KA020CP0	A020CP0	2.000	2.500	2.186	2.314	680	320	.10
KA025CP0	A025CP0	2.500	3.000	2.686	2.814	830	360	.13
KA030CP0	A030CP0	3.000	3.500	3.186	3.314	990	410	.15
KA035CP0	A035CP0	3.500	4.000	3.686	3.814	1,140	450	.18
KA040CP0	KA040CP0	4.000	4.500	4.186	4.314	1,290	480	.19
KA042CP0	A042CP0	4.250	4.750	4.436	4.564	1,370	500	.20
KA045CP0	A045CP0	4.500	5.000	4.686	4.814	1,440	520	.22
KA047CP0	A047CP0	4.750	5.250	4.936	5.064	1,520	540	.23
KA050CP0	A050CP0	5.000	5.500	5.186	5.314	1,590	560	.24
KA055CP0	A055CP0	5.500	6.000	5.686	5.814	1,750	590	.25
KA060CP0	A060CP0	6.000	6.500	6.186	6.314	1,900	630	.28
KA065CP0	A065CP0	6.500	7.000	6.686	6.814	2,050	660	.30
KA070CP0	A070CP0	7.000	7.500	7.186	7.314	2,200	690	.31
KA075CP0	A075CP0	7.500	8.000	7.686	7.814	2,350	720	.34
KA080CP0	A080CP0	8.000	8.500	8.186	8.314	2,500	750	.38
KA090CP0	A090CP0	9.000	9.500	9.186	9.314	2,810	810	.44
KA100CP0	A100CP0	10.000	10.500	10.186	10.314	3,110	870	.50
KA110CP0	A110CP0	11.000	11.500	11.186	11.314	3,410	930	.52
KA120CP0	A120CP0	12.000	12.500	12.186	12.314	3,720	980	.56

¹ Capacities listed are not simultaneous. Dynamic capacities are based upon 1 million revolutions of L10 life.
² Static capacities are non-brinell limits based on rigid support from the shaft and housing.