NN3012-D-K-TVP-SP-XL FAG Precision Double Row Cylindrical Roller Bearing with Tapered Bore 60x95x26mm

Cylindrical roller bearings for main spindles are used when the very highest precision is required under very high radial load. Typical areas of application include machine tools and printing machinery. The bearings facilitate bearing arrangements with very high precision, high radial rigidity and very high load carrying capacity. In machine tool building, they provide radial support for the main spindle.

These are single or double row cylindrical roller bearings with a largely tapered bore (taper 1:12) and a removable outer ring, which can thus be mounted separately from the normal bearing package. The inner ring is only removable in the case of series NNU49.

The bearings are available in various designs which are matched to different requirements. For example, hybrid cylindrical roller bearings with half the number of rollers can achieve extremely high speeds.

Main Dimensions & Performance Data

d	60 mm	Bore diameter
D	95 mm	Outside diameter
B	26 mm	Width
Cr	87,000 N	Basic dynamic load rating, radial
C0r	106,000 N	Basic static load rating, radial
Cur	17,400 N	Fatigue load limit, radial
nG Grease	11,300 1/min	Limiting speed for grease lubrication
nG Oil	13,300 1/min	Limiting speed for oil lubrication
≈m	0.623 kg	Weight

Mounting dimensions

da	70.1 mm	diameter shaft shoulder
	h12	diameter shaft shoulder tolerance
Da	88 mm	diameter of housing shoulder
	H12	Shoulder diameter outer ring clearance
Etk 1 nom	84.4 mm	Injection pitch diameter min
ra1 max	1 mm	Maximum recess radius

Dimensions

r1 min	1.1 mm	Minimum chamfer dimension
E	86.1 mm	Raceway diameter outer ring
s	1.9 mm	Axial displacement

Temperature range

Tmin	-30 °C	Operating temperature min.
Tmax	120 °C	Operating temperature max.

Your current product variant

Cage	TVP	Plastic cage
Tolerance class	SP	tolerance class SP
Bore type	K	Tapered, taper 1:12
Change mark	D	Internal Variant D
Radial internal clearance	C1 (Group 1)	Internal clearance smaller than C2
Number of rolling element rows	2	Double-row design