Ball Bearing, Angular Contact HY S 61904 E TA

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HY S 61904 E TA

HY S 61904 E TA

Part Number	HY S 61904 E TA
Bearing Size	61904

Bearing Dimensions

Bore Diameter	d [mm]	20
Outer Diameter	D [mm]	37
Single Bearing Width	B [mm]	9
Pitch Circle Diameter	d_m [mm]	28.5
Ball Diameter	D_w [mm]	4.76
OD Inner Ring	d₁ [mm]	25.1
ID Outer Ring	D₁ [mm]	31.9
ID Outer Ring - Open Side	D₂ [mm]	33.2
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]	6850
Static Radial Load Rating - Steel Balls	C₀ [N]	4350
Static Radial Load Rating - Si₃N₄ Balls	C_{0 HY} [N]	3050

Bearing RPM Ratings

Speed Value - Oil Lubrication	n_oil [1/min]	63750
Speed Value - Grease Lubrication	n_grease [1/min]	47500

Bearing Series	S
Hybrid (Si₃N₄ Balls)	Yes

Geometrical Data

Number of Balls	Z [Qty]	15
Contact Angle	α0 [°]	25
Bearing Weight	m [kg]	0.036

Mating Part Dimensions

Abutment Diameter Inner Ring	d_{a,b min} [mm]	23.0
Abutment Diameter Outer Ring	D_{a,b max} [mm]	33.5
Chamfer Associated Component	r_{a max} [mm]	0.3
Chamfer Associated Component - Open Side	r_{b max} [mm]	0.15

Bearing Preload Data

Light Pre-Load	F_v [N]	55
Light Axial Rigidity	C_ax [N/µm]	62
Medium Pre-Load	F_v [N]	170
Medium Axial Rigidity	C_ax [N/µm]	95
Heavy Pre-Load	F_v [N]	340
Heavy Axial Rigidity	C_ax [N/µm]	125
Minimum Spring Pre-Load	F_f [N]	250

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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