HSS71913-C-T-P4S-UL Bearing

 

Main Dimensions & Performance Data

d	65 mm	Bore diameter
D	90 mm	Outside diameter
B	13 mm	Width
Cr	13,800 N	Basic dynamic load rating, radial
C0r	9,900 N	Basic static load rating, radial
Cur	1,040 N	Fatigue load limit, radial
nG Grease	20,000 1/min	Limiting speed for grease lubrication
≈m	0.209 kg	Weight

Mounting dimensions

da	70 mm	Diameter shaft shoulder
da	h12	Diameter shaft shoulder clearance
Da	85.5 mm	Shoulder diameter outer ring
Da	H12	Shoulder diameter outer ring clearance
ra max	0.6 mm	Maximum recess radius
ra1 max	0.3 mm	Maximum recess radius
a	16.9 mm	Distance between the apexes of the pressure cones

Dimensions

rmin	1 mm	Minimum chamfer dimension
r1 min	1 mm	Minimum chamfer dimension
α	15 °	Contact angle

Temperature range

Tmin	-30 °C	Operating temperature min.
Tmax	80 °C	Operating temperature max.

Additional information

FV L	48 N	Preload force light
FV M	144 N	Preload force medium
FV H	287 N	Preload force heavy
KaE L	143 N	Lift-off force light
KaE M	450 N	Lift-off force medium
KaE H	937 N	Lift-off force heavy
ca L	42 N/µm	Axial rigidity light
ca M	65 N/µm	Axial rigidity medium
ca H	89 N/µm	Axial rigidity heavy

The HSS71913-C-T-P4S-UL is a high-speed spindle bearing designed for demanding applications requiring exceptional precision and speed. This specific designation reveals key characteristics: "HSS" signifies a high-speed spindle bearing, indicating its ability to handle very high rotational speeds. The "71913" refers to the bearing's dimensions and series, indicating a specific size and load capacity. "C" denotes the contact angle, influencing the axial and radial load capacity. The "T" likely indicates a specific cage design, optimized for high speeds and reduced friction. "P4S" is a precision class designation, signifying extremely tight tolerances and high running accuracy according to ISO standards, with "S" potentially indicating special internal clearance. "UL" often signifies a universal matching design, allowing for preloading when multiple bearings are used in a set.

Key features of the HSS71913-C-T-P4S-UL include high running accuracy due to its precise manufacturing, enabling smooth and vibration-free operation at high speeds. The optimized internal design and cage material minimize friction and heat generation, which is crucial for longevity and performance in high-speed applications. The tight tolerances and high-quality materials used in construction enhance the bearing's stiffness and load-carrying capacity. This combination of features results in several advantages, such as increased machine tool accuracy and surface finish of machined parts, higher machining speeds and thus increased productivity, and extended bearing service life due to reduced wear and heat.

These high-speed spindle bearings are primarily used in machine tools, particularly in milling, grinding, and turning centers where high spindle speeds and precision are paramount. They are also found in other high-speed rotating equipment, such as woodworking machinery, high-speed test rigs, and precision measuring instruments. The ability of the HSS71913-C-T-P4S-UL to operate at high speeds with minimal vibration and high accuracy makes it ideal for applications requiring tight tolerances and superior surface finishes. The use of these bearings contributes to improved product quality, increased production efficiency, and reduced maintenance downtime in demanding industrial settings.

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