Name: FAG M71921-C-2RSD-T-P4S-UL-XL
Brand: FAG
SKU: M71921-C-2RSD-T-P4S-UL-XL

Technical data

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		M71921
Bore diameter	d	105 mm
Outside diameter	D	145 mm
Width	B	20 mm
Basic dynamic load rating	C	39 kN
Basic static load rating	C0	27 kN
Fatigue load limit	Pu	2.55 kN
Mass	≈m	0.82 kg
Precision class		P4S — Tolerance class P4S, FAG standard better than P4 to ISO 492:2023
Sealing		2RSD — Non-contact sealed on both sides and greased “for life”
Cage		T — Laminated fabric cage
Minimum operating temperature	Tmin	-30 °C
Maximum operating temperature	Tmax	80 °C

Product characteristics7 parameters

Product characteristics
Parameter	Symbol	Value
Contact angle	C(17°)	Contact angle 17°
Type of Seal	2RSD	Non-contact sealed on both sides and greased “for life”
Shape of outer surface		Standard
Cage	T	Laminated fabric cage
Tolerance class	P4S	Tolerance class P4S, FAG standard better than P4 to ISO 492:2023
Arrangement bearing set	U	Single bearing
Preload class	L	Preload light

Main Dimensions & Performance Data8 parameters

Main Dimensions & Performance Data
Parameter	Symbol	Value
Bore diameter	d	105 mm4.134 in
Outside diameter	D	145 mm5.709 in
Width	B	20 mm0.787 in
Basic dynamic load rating, radial	Cr	39,000 N8,767.986 lbf
Basic static load rating, radial	C0r	27,000 N6,070.144 lbf
Fatigue load limit, radial	Cur	2,550 N573.291 lbf
Limiting speed for grease lubrication	nG Grease	13,000 1/min
Mass	≈m	0.82 kg1.808 lbs

Mounting dimensions7 parameters

Mounting dimensions
Parameter	Symbol	Value
Diameter shaft shoulder	da	112 mm4.409 in
Diameter shaft shoulder clearance	da	h12
Shoulder diameter outer ring	Da	138 mm5.433 in
Shoulder diameter outer ring clearance	Da	H12
Maximum recess radius	ra max	0.6 mm0.024 in
Maximum recess radius	ra1 max	0.6 mm0.024 in
Distance between the apexes of the pressure cones	a	29.1 mm1.146 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 & suitability5 parameters

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

Manufacturer Identity7 parameters

Product Identity2 parameters

Product Identity
Parameter	Symbol	Value
Construction		High speed spindle bearing M719..-C-2RSD, adjusted, in pairs or sets, contact angle α = 17°, lip seals on both sides, non-contact, restricted tolerances
Short Description		High speed spindle bearing

Additional information9 parameters

Technical Data26 parameters

Technical Data
Parameter	Symbol	Value
Bore Diameter (D)		105 mm
Outside Diameter (D)		145 mm
Width (B)		20 mm
Basic Dynamic Load Rating, Radial (Cr)		39,000 N
Basic Static Load Rating, Radial (C0R)		27,000 N
Operating Temperature Min. (Tmin)		-30 °C
Operating Temperature Max. (Tmax)		80 °C
Axial Rigidity Heavy (Ca H)		188 N/µm
Axial Rigidity Light (Ca L)		94 N/µm
Axial Rigidity Medium (Ca M)		137 N/µm
Diameter Shaft Shoulder (Da)		112 mm
Lift Off Force Heavy (Kae H)		4,962 N
Lift Off Force Light (Kae L)		827 N
Lift Off Force Medium (Kae M)		2,265 N
Preload Force Heavy (Fv H)		1,569 N
Preload Force Light (Fv L)		281 N
Preload Force Medium (Fv M)		745 N
Shoulder Diameter Outer Ring (Da)		138 mm
Limiting Speed For Grease Lubrication (Ng Grea)		13,000 1/min
Fatigue Load Limit, Radial (Cur)		2,550 N
Minimum Chamfer Dimension (Rmin)		1.1 mm
Maximum Fillet Radius (Ra Max)		0.6 mm
Maximum Recess Radius (Ra1 Max)		0.6 mm
Minimum Chamfer Dimension (R1 Min)		0.6 mm
Contact Angle (Α)		17 °
Distance Between The Apexes Of The Pressure Cones (A)		29.1 mm

FAG M71921-C-2RSD-T-P4S-UL-XL