Ball Bearing, Angular Contact KH 61903 C TA

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KH 61903 C TA

KH 61903 C TA

Part Number	KH 61903 C TA
Bearing Size	61903

Bearing Dimensions

Bore Diameter	d [mm]	17
Outer Diameter	D [mm]	30
Single Bearing Width	B [mm]	7
Pitch Circle Diameter	d_m [mm]	23.5
Ball Diameter	D_w [mm]	2.78
OD Inner Ring	d₁ [mm]	21.0
OD Inner Ring - Open Side	d₂ [mm]	20.6
ID Outer Ring	D₁ [mm]	26.2
ID Outer Ring - Open Side	D₂ [mm]	26.8
Chamfer	r_1,2 [mm]	0.3
Chamfer - Open Side	r_3,4 [mm]	0.3

Bearing Load Ratings

Dynamic Radial Load Rating	C [N]	2150
Static Radial Load Rating - Steel Balls	C₀ [N]	1070
Static Radial Load Rating - Si₃N₄ Balls	C_{0 HY} [N]	760

Bearing RPM Ratings

Speed Value - Oil Lubrication	n_oil [1/min]	90000
Speed Value - Grease Lubrication	n_grease [1/min]	67000

Bearing Series	KH
Hybrid (Si₃N₄ Balls)	No

Geometrical Data

Number of Balls	Z [Qty]	18
Contact Angle	α0 [°]	17
Bearing Weight	m [kg]	0.017

Mating Part Dimensions

Abutment Diameter Inner Ring	d_{a,b min} [mm]	19.5
Abutment Diameter Outer Ring	D_{a,b max} [mm]	27.5
Chamfer Associated Component	r_{a max} [mm]	0.3
Chamfer Associated Component - Open Side	r_{b max} [mm]	0.10

Bearing Preload Data

Light Pre-Load	F_v [N]	11
Light Axial Rigidity	C_ax [N/µm]	17
Medium Pre-Load	F_v [N]	35
Medium Axial Rigidity	C_ax [N/µm]	27
Heavy Pre-Load	F_v [N]	65
Heavy Axial Rigidity	C_ax [N/µm]	34
Minimum Spring Pre-Load	F_f [N]	80

Notes:

Position of the oiling Nozzle (d_T) for bearings with TA cage/ TXM cage upon request
The stated load and speed values are given for a spring preloaded single bearing with oil/air or oil mist lubrication. If specific applications differ, please consult correction factors and/or GMN USA engineers.

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