Quick Details

• Structure: Cylindrical

• Type: Roller

• Brand Name: THKF or OEM

• Bore Size: 100 - 850 mm

• Outside Diameter: 140 - 1030 mm

• Model Number: NN3018

• Precision Rating: P2

• Seals Type: open

• Number of Row: Double Row

• Place of Origin: China (Mainland)

• Material: Chrome steel GCR15

• Cage: brass

• Tolerance: P0; P6; P5; P4; P2

• Bore d: 90 mm

• Outer D: 140 mm

• Width B: 37 mm

• Weight: 2.07 kg

• Bore structure: cylindrical

• NN3018K: tapered bore

• Bearing Types: NN; NNU

Packaging & Delivery

Packaging Details:	plastic bag+single box
Delivery Detail:	7-10 days

Specifications

NN3018 cylindrical roller bearing
2. P2 class precision bearings
3. advanced produce technology
4. double row
5. ISO9001

NN3018/ P2 high precision cylindrical roller bearing

NN3018 double row cylindrical roller bearing,P2 class, high precision bearings

The rollers of NN design cylindrical roller bearings are guided between integral flanges on the inner ring, while the rollers of NNU design bearings are guided between integral flanges on the outer ring. In either case, the other ring has no flanges. Therefore, the bearing can accommodate axial displacement of the shaft relative to the housing in both directions, within the bearing.

These bearings are separable, i. e. The bearing ring with integral flanges, together with the roller and cage assembly can be separated from the flangeless ring, to facilitate mounting and dismounting.

Double row cylindrical roller bearings NN type has three flanges on outer ring and no flange on inner ring. Double row cylindrical roller bearings NNU type has no flange on outer ring and three flanges on inner ring.

The cages of double row cylindrical roller bearings are made through machine steel or brass.
Series:
NN30
NN30. ..K
NNU49. ..
NNU49. ..K

Applications:
Gear drive
Hot cutting device used in the factory
Rolling Mill
Machine Tools

www.hdbrg.com

Double row cylindrical roller bearing

Designations	Designations	Designations
NN 3940	NN 3952	NNU 3160
NN 4940K/ W20	NN 4952K	NNU 4864
NN 4940	NN 4952	NN 4964
NNU 4940	NNU 4952	NN 4964K
NN 3040	NN 3052K	NNU 4964
NNU 3040	NN 3052	NN 3064
NN 4040	NN 4052	NNU 3064
NN 3944	NNU 4052	NNU 4064
NN 4944	NN 3152	NNU 3164
NNU 4944	NNU4152	NN 3968
NN 3044	NN 4856	NN 4968K
NNU 3044	NNU4856K	NN 4968
NN 4044	NN 3956	NNU 4968
NN 3144	NN 4956	NN 3068K
NNU 3144	NNU 4956	NN 3068
NN 4848	NN 3056K	NNU3068
NNU4848	NN 3056	NNU 4068
NN 3948	NNU3056	NN 3972
NN 4948	NN 3156	NNU 4972
NNU 4948	NNU 4860	NN 3072
NN 3048	NN 4960	NN 3072K
NNU 3048	NNU 4960	NNU 3072
NN 4048	NN 3060	NN 4072
NNU 4048	NN 3060K	NNU4172
NN 3148	NN4060	NN 4976
NNU 4148	NN 3160	NNU 4976

Cylindrical Roller Bearing Categories:

-single row cylindrical roller bearings (NU, NJ, NUP, N, NF)

-double row cylindrical roller bearings (NN, NNU)

-four row cylindrical roller bearings (FC, FCD)

-full complement cylindrical roller bearings (single&double row)

Bearing Testing Equipments: