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Roller Bearings（Size Standards：Inch Series）

Roller bearings are bearings with cylindrical rolling elements (rollers) placed between inner and outer rings (called races). They are used in a variety of applications such as general machinery, machine tools, motors and reduction drives. The rolling elements used in roller bearings are cylindrical rollers instead of the balls used in ball bearings. Since roller bearings provide more linear support for the load, they are usually used on shafts receiving higher loads. The types of roller bearings available include cylindrical roller bearings and several others. For example, needle roller bearings are more suited to space-saving applications than cylindrical roller bearings. Conical roller bearings can support a radial load and unidirectional axial load at the same time. Self-aligning roller bearings enable the inner race, rolling elements and retainer to rotate in a tilted posture relative to the outer race, making them suited to use in applications such as machinery with highly flexible shafts.

5 items

: 30; 45; 60

Days to Ship	All Same day 4 Days or Less 5 Days or Less 6 Days or Less 7 Days or Less 8 Days or Less 9 Days or Less 10 Days or Less 11 Days or Less 12 Days or Less

Tapered Roller Bearing - Single Row

NTN

Tapered roller bearings utilize conical rollers and raceways, arranged so that the rollers and raceways meet at a common apex. The rollers are guided by contact between the large end of the roller and a rib on the inner ring. This provides high capacity for radial and single thrust loads.

NTN’s pioneering efforts in developing crowned rollers have resulted in greater load-carrying capability and longer bearing life. Crowned rollers under load distribute stress equally along their full length of contact with the raceways, thereby eliminating stress concentration at the roller ends. This design concept also compensates for minor misalignment between shaft and housing bore and deflection under load, thereby reducing stress concentration.

Volume Discount
Days to Ship: 8 Days or more

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Needle Roller Bearing - Shell Type

NTN

•Specification: Standard
•Outer Ring: With Outer Ring
•Raceway Ring Shape: Needle Roller
•Inner/Outer Ring Material: Steel
•Rolling Element Material: Steel

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Days to Ship: 8 Days or more

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Solid Needle Roller Bearing

NTN

•Specification: Standard
•Outer Ring: With Outer Ring
•Load Direction: Radial
•Raceway Ring Shape: Needle Roller
•Inner/Outer Ring Material: Steel

Volume Discount
Days to Ship: 11 Days or more

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Needle Roller Bearing - Shell Type, F Series

NSK

•Specification: Standard
•Outer Ring: With Outer Ring
•Load Direction: Radial
•Precision Ji: Class 0
•Raceway Ring Shape: Needle Roller

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Days to Ship: 8 Days or more

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Needle Roller Bearing - Without Inner Ring, Inch Measurements, Machined, BR Series

IKO

IKO Machined Type Needle Roller Bearings are bearings with a low sectional height and large load ratings. The outer ring has high rigidity and can easily be used even for light alloy housings. These bearings are available in metric series and inch series, both of which have the caged type and the full complement type. It is therefore possible to select a suitable bearing for use under various conditions such as heavy loads and high-speed or low-speed rotations. In addition, there are bearings with and without an inner ring. As the type without inner ring uses a shaft as the raceway surface, a compact design is possible.

Volume Discount

CAD ：

2D / 3D
Days to Ship: 11 Days or more

Days to Ship:	8 Days or more

Days to Ship:	8 Days or more

Days to Ship:	11 Days or more

Days to Ship:	8 Days or more

Days to Ship:	11 Days or more


Brand
Product Series
CAD
Days to Ship
Raceway Ring Shape
Load Direction
I.D. d(Ø)
O.D. D(Ø)
Width B(mm)
Inner/Outer Ring Material
Outer Ring
Precision (JIS)
Number of Raceway Ring Rows
Size Standards
Specifications
Rolling Element Material
Outer Ring Type


Brand	NTN	NTN	NTN	NSK	IKO
Product Series	Tapered Roller Bearing - Single Row	Needle Roller Bearing - Shell Type	Solid Needle Roller Bearing	Needle Roller Bearing - Shell Type, F Series	Needle Roller Bearing - Without Inner Ring, Inch Measurements, Machined, BR Series
CAD					2D / 3D
Days to Ship	8 Days or more Show Stock Products	8 Days or more Show Stock Products	11 Days or more Show Stock Products	8 Days or more Show Stock Products	11 Days or more
Raceway Ring Shape	Cone Roller	Needle Roller	Needle Roller	Needle Roller	Needle Roller
Load Direction	Radial	Radial	-	Radial	Radial
I.D. d(Ø)	19.05 ～ 41.275	12.700(1/2)	34.925(1 3/8)	45	31.75 ～ 50.8
O.D. D(Ø)	45.237 ～ 76.2	17.462(11/16)	47.625(1 7/8)	55	44.45 ～ 65.088
Width B(mm)	16.637 ～ 25.654	12.700(1/2)	25.40(1)	20	31.75
Inner/Outer Ring Material	Steel	Steel	Steel	Steel	Steel
Outer Ring	-	With Outer Ring	With Outer Ring	With Outer Ring	With Outer Ring
Precision (JIS)	-	-	Class 0	Class 0	-
Number of Raceway Ring Rows	Single Track	Single Track	Single Track	Single Track	Single Track
Size Standards	Inch Series	Inch Series	Inch Series	Inch Series	Inch Series
Specifications	Standard	Standard	Standard	Standard	Standard / Abrasion Resistance / For High Speed
Rolling Element Material	Steel	Steel	Steel	Steel	Steel
Outer Ring Type	Flat	Flat	Flat	Flat	With Semicircular Groove

Configure

Specification/Dimensions

Raceway Ring Shape
- Cylindrical Roller
- Needle Roller
- Cone Roller
- Self-Aligning Roller
- Complex Shape Roller
- One-way Clutch
Clear

Load Direction
- Radial
- Thrust
Clear

Metric / Inch
- metric
Clear

I.D. d(Ø)
3

4

4.4 inch

5

5 inch

6

6 inch

6.63 inch

6.88 inch

7

7 inch

8

8 inch

9

9 inch

9.25 inch

10

10 inch

11 inch

12

12.700(1/2)

13

14

15

16

17

18

19

19.05

20

21

21.43

21.986

22

24

25

26

28

29

30

31.75

32

34.925

34.925(1 3/8)

35

37

38

38.1

40

41.275

42

43

45

47

47.625

48

50

50.8

52

55

57

58

60

62

63

65

67

68

70

72

73

75

77

80

82

83

85

87

90

92

93

95

100

102

105

110

112

115

120

122

125

130

132

135

140

145

150

155

160

162

165

170

175

180

185

190

195

200

205

210

215

220

225

240

245

250

260

265

280

285

290

300

320

330

340

360

380
Drawing

Clear

O.D. D(Ø)
6

6.5

7

8

8.8 inch

9

10

10.5 inch

11

12

12 inch

12.5 inch

13

14

14.26 inch

14.5 inch

15

16

16.5 inch

17

17.462(11/16)

18

19

19 inch

20

21

21.25 inch

21.5 inch

22

23

23.75 inch

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

44.45

45

45.237

45.974

47

47.625(1 7/8)

48

49

50

50.005

51

52

52.388

53

54

55

56

57

58

59

60

61

61.912

62

63

64

65

65.088

66

66.5

67

68

70

71.5

72

73

73.025

74

75

76.2

77

78

80

81

82

85

86

89

90

92

95

98

100

105

106

108

110

115

116

117

118

120

125

126

127

130

135

137

140

145

146

150

153

155

160

165

166

170

173

175

178

180

185

188

190

195

200

210

215

216

220

225

226

230

240

250

260

270

280

290

300

310

320

340

360

370

380

400

420

440

460

480

500

520

540

580
Drawing

Clear

Width B(mm)
1

2

2.5

2.75

3

3.5

4

4.25

4.5

4.75

5

5.25

5.5

5.75

6

6.5

7

7.5

8

8.25

8.5

9

9.5

10

10.5

11

11.5

11.75

12

12.700(1/2)

13

13.25

13.5

14

14.25

15

15.25

16

16.25

16.637

17

17.25

17.462

18

18.25

18.288

19

19.25

19.75

20

20.75

21

21.25

21.75

22

22.25

22.75

23

23.75

24

24.25

24.75

25

25.25

25.40(1)

25.654

26

26.25

26.75

27

27.25

28

28.25

28.75

29

29.25

29.75

30

30.5

31

31.5

31.75

32

32.5

32.75

33

33.25

33.5

34

34.5

35

35.25

36

37

38

38.25

38.5

39

40

41

42

42.25

42.5

43

43.5

43.75

44.5

45

45.5

45.75

46

46.5

47

48

48.5

49

49.5

50

51

51.5

52

53

53.5

54

54.5

55

56

57

58

59

59.5

60

61

61.5

62

63

63.5

63.75

64

65

67

67.5

67.75

68

69

70

71.5

71.75

72

73

74

75

76

77

77.5

78

79

80

81.5

82

83

84

84.5

85

86

87

88

90

90.5

91

92

93

95

97

98

98.75

100

102

103

104

106

107.75

108

109

114

115

118

120

121

122

127

130

132

150

176

190

192
Drawing

Clear