Product specifications

Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.

Core specifications13 parameters

Core specifications
Parameter	Symbol	Value
Series		PTB71901
Bore diameter	d	12 mm
Outside diameter	D	24 mm
Width	B	6 mm
Basic dynamic load rating	C	2.9 kN
Basic static load rating	C0	1.07 kN
Fatigue load limit	Pu	0.113 kN
Mass	≈m	0.012 kg
Precision class		P4 — Class 4 (ISO 492:2023)
Cage		TVP — Polyamide cage
Lubricant		GA21 — Grease for super precision bearings, standard
Minimum operating temperature	Tmin	-30 °C
Maximum operating temperature	Tmax	80 °C

Product characteristics6 parameters

Product characteristics
Parameter	Symbol	Value
Preload class	M	Preload medium
Contact angle	E	Contact angle 25°
Tolerance class	P4	Class 4 (ISO 492:2023)
Cage	TVP	Polyamide cage
Arrangement bearing set	U	Single bearing
Lubricant	GA21	Grease for super precision bearings, standard

Main Dimensions & Performance Data8 parameters

Main Dimensions & Performance Data
Parameter	Symbol	Value
Bore diameter	d	12 mm0.472 in
Outside diameter	D	24 mm0.945 in
Width	B	6 mm0.236 in
Basic dynamic load rating, radial	Cr	2,900 N651.978 lbf
Basic static load rating, radial	C0r	1,070 N240.558 lbf
Fatigue load limit, radial	Cur	113 N25.405 lbf
Limiting speed for grease lubrication	nG Grease	53,000 1/min
Mass	≈m	0.012 kg0.026 lbs

Mounting dimensions7 parameters

Mounting dimensions
Parameter	Symbol	Value
Diameter shaft shoulder	da	15 mm0.591 in
Diameter shaft shoulder clearance	da	h12
Shoulder diameter outer ring	Da	21.5 mm0.846 in
Shoulder diameter outer ring clearance	Da	H12
Maximum recess radius	ra max	0.3 mm0.012 in
Maximum recess radius	ra1 max	0.1 mm0.004 in
Distance between the apexes of the pressure cones	a	7.2 mm0.283 in

Dimensions3 parameters

Temperature range2 parameters

Temperature range
Parameter	Symbol	Value
Operating temperature min.	Tmin	-30 °C-22 °F
Operating temperature max.	Tmax	80 °C176 °F

Capabilities & suitability4 parameters

Capabilities & suitability
Parameter	Symbol	Value
Radial load capacity		Yes
Axial load capacity in one direction		Yes
Suitable for grease lubrication		Yes
Sealedonbothsides		Yes

Manufacturer Identity6 parameters

Product Identity2 parameters

Product Identity
Parameter	Symbol	Value
Construction		Precision bearing for Driven Tools PTB719..-E-2RSD, adjusted, in pairs or sets, contact angle α = 25°, lip seals on both sides, non-contact
Short Description		Spindle bearing

Additional information3 parameters

Technical Data20 parameters

Technical Data
Parameter	Symbol	Value
Bore Diameter (D)		12 mm
Outside Diameter (D)		24 mm
Width (B)		6 mm
Basic Dynamic Load Rating, Radial (Cr)		2,900 N
Basic Static Load Rating, Radial (C0R)		1,070 N
Operating Temperature Min. (Tmin)		-30 °C
Operating Temperature Max. (Tmax)		80 °C
Axial Rigidity Medium (Ca M)		51 N/µm
Diameter Shaft Shoulder (Da)		15 mm
Lift Off Force Medium (Kae M)		264 N
Preload Force Medium (Fv M)		87 N
Shoulder Diameter Outer Ring (Da)		21.5 mm
Limiting Speed For Grease Lubrication (Ng Grea)		53,000 1/min
Fatigue Load Limit, Radial (Cur)		113 N
Minimum Chamfer Dimension (Rmin)		0.3 mm
Maximum Fillet Radius (Ra Max)		0.3 mm
Maximum Recess Radius (Ra1 Max)		0.1 mm
Minimum Chamfer Dimension (R1 Min)		0.3 mm
Contact Angle (Α)		25 °
Distance Between The Apexes Of The Pressure Cones (A)		7.2 mm