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Part Number Complete

RNA4911R

Retainer Type Lubricant Internal Clearance Symbol Specifications type Inner Dia. d Outer Dia. D Width B Precision (JIS) Number of Raceway Ring Rows Size Standards Sealing Structure Revolution Frequency Series CAD Days to Ship

Specification/Dimensions

Retainer Type
- Resin Forming
Clear
Lubricant
- 3AS: Albania
- 3AS: Alvania
- LP03: Heat-hardening grease
Clear
Internal Clearance Symbol
CN (Normal Clearance)
Clear
Specifications
- Clearance adjusting shape
Clear
type
- 8Q
- MR
- NA
- NK
- NKS
- RNA
- RNAO
Clear
Inner Dia. d(Ø)
5

6

7

8

9

10

12

14

15

16

17

18

19

20

21

22

24

25

26

28

29

30

32

34.925(1 3/8)

35

37

38

40

42

43

45

47

48

50

52

55

58

60

63

65

68

70

72

73

75

80

85

90

95

100

105

110

115

120

130

135

145

150

155

160

165

195

205

245

265

285

290

330
Clear
Outer Dia. D(Ø)
10

12

13

14

15

16

17

19

20

22

23

24

25

26

27

28

29

30

32

34

37

38

39

40

42

45

47

47.625(1 7/8)

48

50

52

53

55

57

58

62

68

72

78

80

82

85

90

92

95

100

105

110

115

120

125

130

140

150

165

175

180

190

225

250

300

320

360

380
Clear
Width B(mm)
8

10

11

12

13

16

17

18

20

22

23

25

25.40(1)

26

27

30

32

34

35

36

40

45

46

50

54

60

63

67

69

80

100
Clear
Precision (JIS)
- Grade 0
- Grade 4
Clear
Number of Raceway Ring Rows
- Single Row
- Double Row
Clear
Size Standards
- Metric System
- Inch Base
Clear
Sealing Structure
- Brim Type
- Double-sided Seal Type
- Double-sided seal type
- One-sided Seal Type
Clear
Revolution Frequency(rpm)
800

950

1000

1100

1300

1400

1600

1700

1800

1900

2000

2100

2200

2300

2400

2500

2700

2800

2900

3100

3300

3400

3600

3700

3800

4000

4300

4400

4700

5000

5500

6000

6500

7000

7500

8500

9000

9500

10000

11000

12000

13000

14000

15000

16000

17000

18000

19000

20000

21000

23000

25000

27000
Clear
Series
- No Inner Wheel
- No Inner Wheel/Separated Type
- With Inner Wheel
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

Same day

5 Day(s) or Less

6 Day(s) or Less

7 Day(s) or Less

8 Day(s) or Less

9 Day(s) or Less

11 Day(s) or Less

12 Day(s) or Less

13 Day(s) or Less

17 Day(s) or Less
Clear

Specify Alterations

Solid Type Needle Roller Bearing (RNA4911R)

Brand :

NTN

Order Qty :
Total Price :

---
Days to ship :

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The product images are representative only. Specifications may differ for each part number, including shape and color.
Only a part of the lineup is available at MISUMI. Please use the filtering criteria to confirm the details.

Product Description

A solid needle roller bearing.
[Features]
·The solid (machined) outer race enables high rigidity.
·The bearing accuracy can also be increased, making it ideal for applications that require high speed, high load, and high rotational accuracy.
·In addition to the type with inner race, the type without inner race is also available in which the shaft can be used directly as a raceway instead of inner race.
[Application]
・ Heavy load, high speed, gearbox for automobiles, etc.
・ Steel equipment, mining / construction machinery, machine tools.

Product Specifications

Type	Compatible shaft diameter (mm)	Note
RNA49 type	⌀7 to ⌀12	Since the suffix T2 uses a polyamide resin molding retainer, the allowable temperature should be 120°C, and 100°C or less for continuous use. The dimension series is in accordance with JIS B 1512 or ISO 15.
RNA49··R type RNA49··L type RNA49··LL type	RNA49··R type ⌀14 to ⌀490 With seal RNA49··L type RNA49··LL type ⌀14 to ⌀58	The seal type (suffix code: L or LL) that has a built-in synthetic rubber seal on one or both sides is filled with lithium soap-based grease. For the seal type, the operating temperature should be -20 to 120°C, or below 100°C for continuous run, in order to prevent deterioration of the seal and grease. The dimension series is in accordance with JIS B 1512 or ISO 15.
RNA59 type	⌀20 to ⌀160	The dimension series is in accordance with JIS B 1512 or ISO 15.
NA59 type	⌀15 to ⌀140
NK type NKS type	NK ⌀5 to ⌀12	The suffix code T2 indicates that a polyamide resin molded retainer is used and the allowable temperature is 120°C. For continuous run, maintain 100°C or below.
NK type NKS type	NKS ⌀8 to ⌀40
NKS type	⌀43 to ⌀110

Product features details

The solid needle roller bearing is ideal for applications that require high speed, high load, and high rotational accuracy.

Solid needle roller bearing, detailed product features

RNA49 type

RNA49··R type
RNA49··L type
RNA49··LL type

RNA59 type

NA59 type

NK type
NKS type

NKS type

Features of solid needle roller bearings

The dimensional accuracy, shape accuracy and rotational accuracy of solid needle roller bearings are specified in JIS B 1514 (Accuracy of Roller Bearings).
Products with precision class JIS0 are manufactured as standard, however, products with class JIS6, 5, and 4 are also available for applications that require higher rotational accuracy.
The dimensional tolerance of the roller inscribed circle diameter (Fw) of the no-inner race NK, RNA, NKS, and MR types falls within the ISO tolerance class F6. For reference when selecting the shaft diameter dimensions and radial clearance.

The solid needle roller bearing has the structure in which the needle rollers and retainer are assembled to the solid (machined) outer race, and the outer race and needle rollers are kept together by the flange or side walls on both sides of the outer race. The solid (machined) outer race ensures
high rigidity and can increase the bearing accuracy, therefore, it is ideal for applications that require high speed, high load, and high rotational accuracy.
In addition to the type with inner race, the type without inner race is also available in which the shaft can be used directly as a raceway instead of inner race.

The allowable rotational speed is the rotational speed that is allowed to achieve under the following conditions. For the allowable rotational speed under usage conditions that are different from the following, please refer to the "Precision Roller Bearing Catalog" or contact the manufacturer.
·Use under conditions where an appropriate amount of grease recommended by NTN is sealed, a sufficient break-in operation is performed, and generated heat is eliminated by such as cooling the outer housing.
・ Use with constant pressure preload.

: 30; 45; 60

Part Number
RNA4911R

Part Number	Price	Minimum Order Qty.	Volume Discount	Days to Ship	RoHS	Inner Dia. d (Ø)	Outer Dia. D (Ø)	Width B (mm)	Precision (JIS)	Number of Raceway Ring Rows	Size Standards	Retainer Type	Basic Load Rating: Dynamic Load (N)	Sealing Structure	Lubricant	Internal Clearance Symbol	Specifications	Revolution Frequency (rpm)	Series
	₹ 2,615.89	1 Piece(s)		8 Day(s) or more	-	63	80	25	Grade 0	Single Row	Metric System	-	58500	Brim Type	-	-	-	4300	No Inner Wheel

Basic Information

Raceway Ring Shape	Needle Roller	Load Direction	Radial	Outer Ring	With Outer Ring
Inner/Outer Ring Material	Steel	Specifications/Environment	Standard	Rolling Element Material	Steel
Outer Ring Type	Flat

Please check the type/dimensions/specifications of the part RNA4911R in the Solid Type Needle Roller Bearing series.

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Product variants

Part Number
NK10/12T2
NK10/16
NK100/26R
RNA4912
RNA4912R
RNA4913

Standard Unit Price	Minimum order quantity	Days to Ship	RoHS	Inner Dia. d (Ø)	Outer Dia. D (Ø)	Width B (mm)	Precision (JIS)	Number of Raceway Ring Rows	Size Standards	Retainer Type	Basic Load Rating: Dynamic Load (N)	Sealing Structure	Lubricant	Internal Clearance Symbol	Specifications	Revolution Frequency (rpm)	Series
₹ 699.31	1 Piece(s)	5 Day(s) or more	-	10	17	12	Grade 0	Single Row	Metric System	Resin Forming	4550	-	-	-	-	19000	No Inner Wheel
₹ 750.76	1 Piece(s)	5 Day(s) or more	-	10	17	16	Grade 0	Single Row	Metric System	-	5450	-	-	-	-	19000	No Inner Wheel
₹ 10,288.24	1 Piece(s)	8 Day(s) or more	-	100	120	26	Grade 0	Single Row	Metric System	-	73500	Brim Type	-	-	-	2700	No Inner Wheel
₹ 3,319.02	1 Piece(s)	5 Day(s) or more	-	68	85	25	Grade 0	Single Row	Metric System	-	61500	-	-	-	-	6000	No Inner Wheel
₹ 3,339.11	1 Piece(s)	9 Day(s) or more	-	68	85	25	Grade 0	Single Row	Metric System	-	61500	Brim Type	-	-	-	4000	No Inner Wheel
₹ 3,989.11	1 Piece(s)	8 Day(s) or more	-	72	90	25	Grade 0	Single Row	Metric System	-	62500	-	-	-	-	5500	No Inner Wheel

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