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Case studies
Axial loading of bearing arrangements incorporating two single row angular contact ball bearings and

Axial loading of bearing arrangements incorporating two single row angular contact ball bearings and


Bearing arrangement	Load case	Axial loads
Back-to-back	Case 1a
	F_rA ≥ F_rB	F_aA = R F_rA	F_aB = F_aA + K_a
	K_a ≥ 0


	Case 1b
	F_rA < F_rB	F_aA = R F_rA	F_aB = F_aA + K_a
Face-to-face	K_a ≥ R (F_rB – F_rA)


	Case 1c
	F_rA < F_rB	F_aA = F_aB – K_a	F_aB = R F_rB
	K_a < R (F_rB – F_rA)

Back-to-back	Case 2a
	F_rA ≤ F_rB	F_aA = F_aB + K_a	F_aB = R F_rB
	K_a ≥ 0


	Case 2b
	F_rA > F_rB	F_aA = F_aB + K_a	F_aB = R F_rB
Face-to-face	K_a ≥ R (F_rA – F_rB)


	Case 2c
	F_rA > F_rB	F_aA = R F_rA	F_aB = F_aA – K_a
	K_a < R (F_rA – F_rB)

For bearings with: 20° contact angle → R = 0,50 25° contact angle → R = 0,57 30° contact angle → R = 0,66 40° contact angle → R = 0,88

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