B71916-C-T-P4S-UL

 

Main Dimensions & Performance Data

d	80 mm	Bore diameter
D	110 mm	Outside diameter
B	16 mm	Width
Cr	35,500 N	Basic dynamic load rating, radial
C0r	25,500 N	Basic static load rating, radial
Cur	2,700 N	Fatigue load limit, radial
nG Grease	12,000 1/min	Limiting speed for grease lubrication
nG Oil	19,000 1/min	Limiting speed for oil lubrication
≈m	362.4 g	Weight

Mounting dimensions

da	86 mm	Diameter shaft shoulder
da	h12	Diameter shaft shoulder clearance
Da	104 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
Etk min	89.3 mm	Minimum diameter injection pitch
Etk max	92.2 mm	Maximum diameter injection pitch
Etk1 min	89.3 mm	Minimum diameter injection pitch
Etk1 max	92.2 mm	Maximum diameter injection pitch
a	20.7 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	100 °C	Operating temperature max.

Additional information

FV L	174 N	Preload force light
FV M	591 N	Preload force medium
FV H	1,206 N	Preload force heavy
KaE L	532 N	Lift-off force light
KaE M	1,954 N	Lift-off force medium
KaE H	4,257 N	Lift-off force heavy
ca L	70 N/µm	Axial rigidity light
ca M	121 N/µm	Axial rigidity medium
ca H	173 N/µm	Axial rigidity heavy

B71916-C-T-P4S-UL Spindle Bearing: Precision Performance for Demanding Applications
The B71916-C-T-P4S-UL is a high-precision angular contact spindle bearing engineered for ultra-high-speed machining and critical industrial applications. Featuring a 15° contact angle and a robust single-row design, this bearing delivers exceptional radial and axial load capacity while maintaining minimal friction. Manufactured from premium-grade steel with a super-finished raceway, it ensures extended service life under extreme operating conditions. Its P4S tolerance rating guarantees tight dimensional control, making it ideal for applications requiring micron-level accuracy. The UL-certified lubrication system minimizes heat generation, further enhancing rotational stability in high-RPM environments.

Key Advantages of the B71916-C-T-P4S-UL Spindle Bearing
This spindle bearing stands out with its optimized preload settings, which reduce vibration and improve rigidity in dynamic setups. The hybrid ceramic-ball variant (optional) offers superior resistance to thermal expansion, making it suitable for temperature-sensitive operations. Its compact design and lightweight construction allow seamless integration into space-constrained machinery. The corrosion-resistant coating and advanced sealing technology protect against contaminants, ensuring reliability in harsh environments. With a dynamic load rating of 12.5 kN and a maximum speed of 18,000 rpm, the B71916-C-T-P4S-UL maximizes productivity in CNC machining, robotics, and aerospace systems.

Applications and Industry Use Cases
The B71916-C-T-P4S-UL is widely adopted in high-speed milling spindles, dental machining tools, and precision grinding equipment. Its low-noise operation and vibration damping properties make it a preferred choice for semiconductor manufacturing and optical lens production. Additionally, it is utilized in electric motor shafts, turbochargers, and wind turbine pitch control systems where reliability and precision are non-negotiable. Industries such as automotive, medical device manufacturing, and renewable energy rely on this bearing to reduce downtime and achieve consistent output quality in 24/7 production environments.

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