Needle Roller Bearings - Ntn-snr.com

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Needle roller and cage assemblies NTN Needle Roller and Cage Assemblies This needle roller and cage assembly is one of the basic components for the needle roller bearing of a construction wherein the needle rollers are fitted with a cage so as not to separate from each other. The use of this roller and cage assembly enables to design a compact and lightweight construction by utilizing a shaft or a housing as the direct raceway surface, without using inner ring and outer ring. The needle rollers are guided by the cage more precisely than the full complement roller type, hence enabling high speed running of bearing. In addition, its rigidity and load capacity are high for the specific space. Type of needle roller and cage assembly Cage type Applied shaft diameter (mm) Composition of nominal bearing number Nominal bearing number Code items and respective dimensions K KS KT2 Machined ring type Polyamide resin type Welded type 3285 10100 K 20 24 10 S Tail code Width Roller set outer diameter Inscribed circle diameter Type code K202410S Inscribed circle diameter : 20 Roller set outer diameter : 24 Width : 10 S : Welded type KMJ KMJS PCJ Punched type Welded type 15100 1040 KMJ 20 26 13 Width Roller set outer diameter Inscribed circle diameter Type code KMJ202613 Inscribed circle diameter : 20 Roller set outer diameter : 26 Width : 13 KJS Welded type 2040 KJ 30 35 17 S Tail code Width Roller set outer diameter Inscribed circle diameter Type code KJ303517S Inscribed circle diameter : 30 Roller set outer diameter : 35 Width : 17 S : Welded type KVS Welded type 7100 KV 30 35 17 S Tail code Width Roller set outer diameter Inscribed circle diameter Type code KV303517S Inscribed circle diameter : 30 Roller set outer diameter : 35 Width : 17 S : Welded type KZW Machined ring type 8285 K 20 24 45 ZW Tail code Width Roller set outer diameter Inscribed circle diameter Type code K202445ZW Inscribed circle diameter : 20 Roller set outer diameter : 24 Width : 45 ZW : Double-row type GK Machined ring type Split type 8285 GK 30 35 17 Width Roller set outer diameter Inscribed circle diameter Type code GK303517 Inscribed circle diameter : 30 Roller set outer diameter : 35 Width : 17 The ones with tail code T2 using polyamide resin cage shall be used at allowable temperature 120˚C and, under continuous running, at 100˚C or less. The applied shaft diameter of welded type are described based on size that manufacturers can deal with a manufacturing. Therefore, it has nothing to do with the Demention Table. B-4
Needle roller and cage assemblies NTN Inter-roller diameter deviation of needle rollers Inter-roller diameter deviation of needle rollers which are built in one cage is within 2um. The respective specified diameter tolerances for built-in needle rollers are identified by identification colors on the package label, as shown in Table 1. The standard identification colors marked on each label are red, dark blue, blue, black and white, unless otherwise specially indicated. Where two or more bearings are used in tandem, those of same identification color must be used for equal distribution of bearing load. Table 1 Color identification of diameter tolerances for needle roller bearings Identification color on label Diameter tolerance m Classification Shaft and housing specifications Where a shaft and a housing are used as the direct raceway surface, the raceway surface must meet the specifications described in Table 3. Table 3 Shaft and housing specifications Characteristics Roundness (max) Cylindricality (max) Surface roughness (max) Surface hardness Depth of hardened layer (min) Shaft Housing IT3 IT4 IT3 IT4 Refer to Table 7.4 on page A-39. HRC5864 Refer to formula (7.1) on page A-39 Red Dark blue Blue Black White Gray Green Brown Yellow 0 2 1 3 2 4 3 5 4 6 5 7 6 8 7 9 810 Standard Semi-standard Bearing installation related dimensions The tolerances for the nominal dimension "Bc" of cage specified in Table 4 are recommended as the guide width b of cage. Table 4 Guide width tolerances Unit : mm Tolerances for guide width b Classification Single row Double row Metric system Bc 0.2 0 Bc 0.3 0.1 Radial Clearance Inch system Bc 0.4 0.2 Bc 0.5 0.3 When a shaft and a housing are used as the direct raceway surface, the radial clearance is determined by the shaft diameter and the housing hole dimension. Where the diameter tolerances for needle rollers are standard (tolerances color-identified in red, dark blue, blue, black, white), the shaft diameters and housing hole dimensions shown in Table 2 are used. b Bc Table 2 Recommended fits Shaft diameter mm Smaller than ordinary clearance Radial Ordinary clearance clearance Larger than ordinary clearance 80 j5/G6 h5/G6 g6/G6 80140 h5/G6 g5/G6 f6/G6 140 h5/G6 f5/H6 f6/G6 Shaft guide b Bc Housing guide Fig. 1 B-5
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For New Technology Network R corpor
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Technical Data A-001058 Needle roll
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Needle Roller Bearings
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DIMENSIONAL DATA CONTENTS Needle Ro
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Classification and Characteristics
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Page 15 and 16: Classification and Characteristics
Page 17 and 18: Classification and Characteristics
Page 19 and 20: Load Rating and Life NTN Table 2.1
Page 21 and 22: Load Rating and Life NTN When the o
Page 23 and 24: Load Rating and Life NTN 2.10 Radia
Page 25 and 26: Calculation of Bearing Loads NTN (2
Page 27 and 28: Calculation of Bearing Loads NTN 3.
Page 29 and 30: Bearing Accuracy NTN 4. Bearing Acc
Page 31 and 32: A-27 Bearing Accuracy NTN 7 7 8 8 8
Page 33 and 34: Bearing Accuracy NTN Table 4.5 Allo
Page 35 and 36: Bearing Internal Clearance NTN 5.2.
Page 37 and 38: Bearing Fits NTN 6.4 Recommended Fi
Page 39 and 40: Bearing Fits NTN 6.5 Interference C
Page 41 and 42: Shaft Bearing and Fits Housing Desi
Page 43 and 44: Shaft Bearing and Fits Housing Desi
Page 45 and 46: Lubrication NTN Table 8.2 Grease va
Page 47 and 48: Lubrication NTN (4) Circulating lub
Page 49 and 50: Sealing Devices NTN 9. Sealing Devi
Page 51 and 52: Sealing Devices NTN 9.2 Combined se
Page 53 and 54: Bearing Handling NTN 10. Bearing Ha
Page 55 and 56: Bearing Handling NTN the bearing fi
Page 57 and 58: Technical Data NTN 11.2 Bearings wi
Page 59 and 60: Technical Data NTN expressed in the
Page 61 and 62: Bearing Type Symbols and Auxiliary
Page 63 and 64: Needle roller and cage assemblies B
Page 65: Needle Roller and Cage Assemblies
Page 69 and 70: Needle roller and cage assemblies N
Page 81 and 82: Cage and roller type needle roller
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Page 91 and 92: Drawn Cup Needle Roller Bearings
Page 93 and 94: Drawn cup needle roller bearings NT
Page 107 and 108: Drawn cup needle roller bearings se
Page 109 and 110: Drawn cup needle roller bearings se
Page 115 and 116: Machined Ring Needle Roller Bearing
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Machined ring needle roller bearing
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Machined-ring needle roller bearing
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Machined Ring Needle Roller Bearing
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Inner Rings
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Inner rings NTN Type IR d 510mm Bou
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Inner rings NTN d 1520mm Boundary d
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Inner rings NTN d 80100mm Boundary
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Inner rings NTN d 170380mm Boundary
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Inner rings NTN Inch series Type MI
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Inner rings NTN d 101.600203.200mm
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Adjustable-Clearance Needle Roller
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Clearance-adjustable needle roller
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Clearance-adjustable needle roller
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Complex Bearings
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Complex bearings NTN Bearing compon
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Complex bearings NTN B-143
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Needle roller bearings with thrust
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Needle roller bearings with angular
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Needle roller bearings with three-p
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Needle roller bearings with double-
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Needle roller bearings with double-
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Roller Followers / Cam Followers
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Roller followers: Yoke-type track r
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Roller followers : Yoke type truck
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Cam followers stud type truck rolle
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Thrust Roller Bearings
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Thrust roller bearings NTN Bearing
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Thrust roller bearings NTN B-209
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Thrust needle roller bearings NTN B
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Thrust needle roller bearings NTN B
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Thrust cylindrical roller bearing N
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COMPONENTS Needle Rollers/Snap Ring
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Needle rollers NTN Application of n
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Needle rollers NTN DW 4.55mm Bounda
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Snap rings NTN For shaft Type WR Be
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Snap rings NTN For housing Type BR
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Snap rings NTN Bearing numbers Boun
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Seals NTN Type G Type GD Type G Typ
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LINEAR BALL BEARINGS: Solid, Drawn
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Linear Ball Bearings NTN Components
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Linear Ball Bearings NTN Components
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Solid type linear ball bearings NTN
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Machined cup linear ball bearings N
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Linear ball bearings, stroke type N
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Machined ring linear ball bearings
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Linear flat rollers NTN Stopper Fig
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Linear flat rollers NTN Type BF Typ
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Linear roller bearings NTN Type RLM
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One-way Clutches Tension Pulleys, B
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One-way clutches NTN Shaft and hous
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One-way clutch miniature type NTN T
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Bottom roller bearings NTN Type FRI
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Bottom roller bearings NTN Type FRI
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Tensioner pulleys for textile machi
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Contents of Appendix Approximate co
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Appendix NTN ˚C-˚F temperature co
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C-5 Appendix NTN Standard ball Hult
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Appendix NTN Unit system Quantity P
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Appendix NTN Viscosity conversion t
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Appendix NTN Ordinary tolerance for
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Appendix NTN High Low Hig
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Appendix NTN H7 H8 H9 H10 H11 H13 J
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