Needle Roller Bearings

Single row needle roller bearings Double row needle roller bearings Long cylindrical roller bearings

Needle Roller Bearings

Single row needle roller bearings

LYC’s single-row needle roller bearings are designed with a thin cross-sectional profile, offering excellent rigidity and the ability to handle high radial loads, especially in applications with limited radial space.

Key Features:
  • Compact Design: The reduced axial section makes these bearings suitable for applications with tight installation constraints.
  • High Radial Load Capacity: Despite their small size, these bearings are capable of supporting substantial radial loads.
  • Pure Radial Load Support: Needle roller bearings are specifically designed for radial loads and cannot accommodate axial displacement between the shaft and housing.
  • Alignment Sensitivity: Precise alignment is required, as the bearing does not allow for angular errors between the inner and outer rings.
Common Applications:
  • Swinging shafts and bearing housings in automotive transmissions
  • Gearboxes and power tools with limited space for bearings
  • Compact machinery requiring high load capacity without added bulk
Designation Principal dimensions Basic load ratings Limiting speed
Dynamic Static Grease Oil
d D B Cr Cor RPM RPM
mm mm mm KN KN r/min r/min
RNA4907A ㅡ 55 20 32 50 4800 9500
RNA4908A ㅡ 62 22 43.5 66.5 4000 8500
RAN4904A ㅡ 37 17 31.3 25.5 7500 14000
RNA4905A ㅡ 42 17 24 31.5 6300 13000
RNA6/28A ㅡ 42 20 23.5 37.5 6300 13000
RNA4906A ㅡ 47 17 25.5 35.5 5600 11000
RNA6/32 ㅡ 52 22 30 42 5000 14000
RNA4909A ㅡ 68 22 45 72 3800 8000
RNA6/48A ㅡ 68 25 41 82 3600 7500
RNA4910A ㅡ 72 22 48 80 3400 7000
RNA4914A ㅡ 100 30 85.5 156 2800 5500
RNA4917 ㅡ 120 35 112 237 2500 3800
NA4908 ㅡ 62 22 43.5 66.5 5500 8500
K31.675X46.81X44.1JR ㅡ ㅡ 44.1 ㅡ ㅡ ㅡ ㅡ
K19.05X31.775X34JR ㅡ ㅡ 34 ㅡ ㅡ ㅡ ㅡ
K19.051X28.588X36.75JR ㅡ ㅡ 36.75 ㅡ ㅡ ㅡ ㅡ
K19.051X28.588X43.25JR ㅡ ㅡ 43.25 ㅡ ㅡ ㅡ ㅡ
K20X30.02X18JR ㅡ ㅡ 18 ㅡ ㅡ ㅡ ㅡ
K20.612X33.325X35JR ㅡ ㅡ 35 ㅡ ㅡ ㅡ ㅡ
K25X38X24.7JR ㅡ ㅡ 24.7 ㅡ ㅡ ㅡ ㅡ
K25.4X41.288X60.4JR ㅡ ㅡ 60.4 ㅡ ㅡ ㅡ ㅡ
K27.71X42.825X44.1JR ㅡ ㅡ 44.1 ㅡ ㅡ ㅡ ㅡ
K29.975X42X44.1JR ㅡ ㅡ 44.1 ㅡ ㅡ ㅡ ㅡ
K32X52.012X49JR ㅡ ㅡ 49 ㅡ ㅡ ㅡ ㅡ
K52.412X71.425X43.3JR ㅡ ㅡ 43.3 ㅡ ㅡ ㅡ ㅡ
K130X138X25JR ㅡ ㅡ 25 ㅡ ㅡ ㅡ ㅡ
K38X43X35.7ZWDTN1 ㅡ ㅡ 35.7 ㅡ ㅡ ㅡ ㅡ
K32X37X35.8ZWDTN1 ㅡ ㅡ 35.8 ㅡ ㅡ ㅡ ㅡ
K37X42X29.79ZWDTN1 ㅡ ㅡ 29.79 ㅡ ㅡ ㅡ ㅡ
K82.5X92X38 ㅡ ㅡ 38 ㅡ ㅡ ㅡ ㅡ
K88.8X101.5X38 ㅡ ㅡ 38 ㅡ ㅡ ㅡ ㅡ
NA4901 12 24 13 10.1 11.7 15000 23000
NA4904 20 37 17 21.3 25.5 11000 16000
NA6905A 25 42 30 41.5 63 8500 13000
NA4905 25 42 17 24 31.5 8500 13000
NA6906A 30 47 30 44 71.5 7500 11000
NA4906 30 47 17 25.5 35.5 7500 11000
NA4907 35 55 20 32 50 6600 9500
NA6909A 45 68 40 76 149 5300 7500
NA4909 45 68 22 45 72 5500 8000
NA4910 50 72 22 48 80 5000 7000
NA4911 55 80 25 58.5 99.5 4500 6300
NA4913 65 90 25 62.5 112 3700 5500
NA4914 70 100 30 85.5 156 3300 5500
RNA6903X2A 80 30 30 18.6 28.8 12000 18000
RNA6904A 80 37 30 36.5 50.5 11000 16000
NA6916A 80 110 54 149 325 3200 4500
RNA602A 80 32 30 17.6 12.8 13000 20000
RNA69/28A 80 45 30 43 67 8500 13000
RAN6906A 80 47 30 44 71.5 7500 11000
RNA6907A 80 55 36 57.5 106 6500 9500
RNA6909A 80 68 40 76 149 5000 7500
NA4916 80 110 30 90.5 174 2900 4400
NA4917 85 120 35 112 237 2500 3800
NA4918 90 125 35 116 252 2500 3800
NA4922 110 150 40 149 315 2100 3200
NA4924 120 165 45 192 395 2000 3000
NA4828 140 175 35 133 340 1700 2600
NA4834 170 215 45 185 495 1500 2200
NA4836 180 225 45 195 540 1400 2100
NA4844 220 270 50 242 770 1100 1700
NA4852 260 320 60 375 1160 900 1400
NA4856 280 350 69 455 1300 850 1300
NA4860 300 380 80 525 1610 750 1100
NA4864 320 400 80 542 1700 750 1100
NA4868 340 420 80 556 1800 700 1000
RAN4904A 340 37 17 31.3 25.5 7500 14000
RNA4905A 340 42 17 24 31.5 6300 13000
RNA6/28A 340 42 20 23.5 37.5 6300 13000
RNA4906A 340 47 17 25.5 35.5 5600 11000
RNA6/32 340 52 22 30 42 5000 14000
RNA4907A 340 55 20 32 50 4800 9500
RNA4908A 340 62 22 43.5 66.5 4000 8500
RNA4909A 340 68 22 45 72 3800 8000
RNA6/48A 340 68 25 41 82 3600 7500
RNA4910A 340 72 22 48 80 3400 7000
RNA4914A 340 100 30 85.5 156 2800 5500
RNA4917 340 120 35 112 237 2500 3800
Designation Principal dimensions
d D
mm mm
RNA4907A ㅡ 55
RNA4908A ㅡ 62
RAN4904A ㅡ 37
RNA4905A ㅡ 42
RNA6/28A ㅡ 42
RNA4906A ㅡ 47
RNA6/32 ㅡ 52
RNA4909A ㅡ 68
RNA6/48A ㅡ 68
RNA4910A ㅡ 72
RNA4914A ㅡ 100
RNA4917 ㅡ 120
NA4908 ㅡ 62
K31.675X46.81X44.1JR ㅡ ㅡ
K19.05X31.775X34JR ㅡ ㅡ
K19.051X28.588X36.75JR ㅡ ㅡ
K19.051X28.588X43.25JR ㅡ ㅡ
K20X30.02X18JR ㅡ ㅡ
K20.612X33.325X35JR ㅡ ㅡ
K25X38X24.7JR ㅡ ㅡ
K25.4X41.288X60.4JR ㅡ ㅡ
K27.71X42.825X44.1JR ㅡ ㅡ
K29.975X42X44.1JR ㅡ ㅡ
K32X52.012X49JR ㅡ ㅡ
K52.412X71.425X43.3JR ㅡ ㅡ
K130X138X25JR ㅡ ㅡ
K38X43X35.7ZWDTN1 ㅡ ㅡ
K32X37X35.8ZWDTN1 ㅡ ㅡ
K37X42X29.79ZWDTN1 ㅡ ㅡ
K82.5X92X38 ㅡ ㅡ
K88.8X101.5X38 ㅡ ㅡ
NA4901 12 24
NA4904 20 37
NA6905A 25 42
NA4905 25 42
NA6906A 30 47
NA4906 30 47
NA4907 35 55
NA6909A 45 68
NA4909 45 68
NA4910 50 72
NA4911 55 80
NA4913 65 90
NA4914 70 100
RNA6903X2A 80 30
RNA6904A 80 37
NA6916A 80 110
RNA602A 80 32
RNA69/28A 80 45
RAN6906A 80 47
RNA6907A 80 55
RNA6909A 80 68
NA4916 80 110
NA4917 85 120
NA4918 90 125
NA4922 110 150
NA4924 120 165
NA4828 140 175
NA4834 170 215
NA4836 180 225
NA4844 220 270
NA4852 260 320
NA4856 280 350
NA4860 300 380
NA4864 320 400
NA4868 340 420
RAN4904A 340 37
RNA4905A 340 42
RNA6/28A 340 42
RNA4906A 340 47
RNA6/32 340 52
RNA4907A 340 55
RNA4908A 340 62
RNA4909A 340 68
RNA6/48A 340 68
RNA4910A 340 72
RNA4914A 340 100
RNA4917 340 120

Needle Roller Bearings

Double row needle roller bearings

LYC’s double-row needle roller bearings offer similar features to single-row designs but with enhanced load capacity and increased rigidity. These bearings are well-suited for applications needing higher radial support while maintaining a slim profile.

Key Benefits:
  • Increased Load Capacity: The double-row configuration allows for greater radial load support, making them suitable for heavier-duty applications.
  • Slim Profile: The narrow cross-section remains advantageous in spaces where conventional bearings might be too large.
  • Radial Load Handling Only: Like the single-row type, double-row needle roller bearings are intended for radial loads only and do not accommodate axial displacement or misalignment.
Suitable Uses:
  • Heavy-duty applications in automotive gear systems
  • Industrial equipment requiring compact yet robust bearings
  • Machinery with limited radial installation space but demanding high radial load support
Designation Principal dimensions Basic load ratings Limiting speed
Dynamic Static Grease Oil
d D B Cr Cor RPM RPM
mm mm mm KN KN r/min r/min
604922 ㅡ 164 113 ㅡ ㅡ ㅡ ㅡ
604922/YB2 ㅡ 164 105 ㅡ ㅡ ㅡ ㅡ
604938 ㅡ 260 195 ㅡ ㅡ ㅡ ㅡ
604912/YA3 ㅡ 95 81 ㅡ ㅡ ㅡ ㅡ
604906 ㅡ 52 47 ㅡ ㅡ ㅡ ㅡ
604908 ㅡ 66 59 ㅡ ㅡ ㅡ ㅡ
604907 ㅡ 60 53 ㅡ ㅡ ㅡ ㅡ
604909 ㅡ 74 65 ㅡ ㅡ ㅡ ㅡ
604909/YA3 ㅡ 74 65 ㅡ ㅡ ㅡ ㅡ
604910/YA3 ㅡ 83 73.5 ㅡ ㅡ ㅡ ㅡ
604910 ㅡ 83 73.5 ㅡ ㅡ ㅡ ㅡ
604932 ㅡ 230 160 ㅡ ㅡ ㅡ ㅡ
604912 ㅡ 95 81 ㅡ ㅡ ㅡ ㅡ
604914/YA3 ㅡ 110 89 ㅡ ㅡ ㅡ ㅡ
604914 ㅡ 110 89 ㅡ ㅡ ㅡ ㅡ
604915 ㅡ 120 95 ㅡ ㅡ ㅡ ㅡ
604915/YA3 ㅡ 120 88 ㅡ ㅡ ㅡ ㅡ
604916 ㅡ 124 96 ㅡ ㅡ ㅡ ㅡ
604917 ㅡ 130 103 ㅡ ㅡ ㅡ ㅡ
604920 ㅡ 154 111 ㅡ ㅡ ㅡ ㅡ
57049/16 ㅡ 30 21 ㅡ ㅡ ㅡ ㅡ
57049/15 ㅡ 28 19 ㅡ ㅡ ㅡ ㅡ
58049/14/YA ㅡ 24 16.6 ㅡ ㅡ ㅡ ㅡ
58049/14 ㅡ 24 16.6 ㅡ ㅡ ㅡ ㅡ
58049/22 ㅡ 35 3 10 ㅡ ㅡ ㅡ
58049/25-FS ㅡ 39 28 9.9 ㅡ ㅡ ㅡ
58049/25-RSFS ㅡ 39 32.6 9.9 ㅡ ㅡ ㅡ
58049/25-RS ㅡ 39 32.6 9.9 ㅡ ㅡ ㅡ
58049/25-RS/YA ㅡ 39 32.6 ㅡ ㅡ ㅡ ㅡ
58049/45 ㅡ 62 34.4 9 ㅡ ㅡ ㅡ
58049/34 ㅡ 50 34.4 9 ㅡ ㅡ ㅡ
58049/45-RS ㅡ 62 36.5 9 ㅡ ㅡ ㅡ
58049/34 X2 ㅡ 50 28.4 9 ㅡ ㅡ ㅡ
NA6907A 35 55 36 57.5 106 6100 9500
NA6908A 40 62 40 72 137 5600 8000
NA608 40 65 22 43.5 66.5 5500 8500
NA611 55 85 25 58.5 99.5 4300 6000
RNA602A 80 32 30 17.6 12.8 13000 20000
RNA6903X2A 80 30 30 18.6 28.8 12000 18000
RNA6904A 80 37 30 36.5 50.5 11000 16000
RNA69/28A 80 45 30 43 67 8500 13000
RNA6906A 80 47 30 44 71.5 7500 11000
RNA6907A 80 55 36 57.5 106 6500 9500
RNA6909A 80 68 40 76 149 5000 7500
Designation Principal dimensions
d D
mm mm
604922 ㅡ 164
604922/YB2 ㅡ 164
604938 ㅡ 260
604912/YA3 ㅡ 95
604906 ㅡ 52
604908 ㅡ 66
604907 ㅡ 60
604909 ㅡ 74
604909/YA3 ㅡ 74
604910/YA3 ㅡ 83
604910 ㅡ 83
604932 ㅡ 230
604912 ㅡ 95
604914/YA3 ㅡ 110
604914 ㅡ 110
604915 ㅡ 120
604915/YA3 ㅡ 120
604916 ㅡ 124
604917 ㅡ 130
604920 ㅡ 154
57049/16 ㅡ 30
57049/15 ㅡ 28
58049/14/YA ㅡ 24
58049/14 ㅡ 24
58049/22 ㅡ 35
58049/25-FS ㅡ 39
58049/25-RSFS ㅡ 39
58049/25-RS ㅡ 39
58049/25-RS/YA ㅡ 39
58049/45 ㅡ 62
58049/34 ㅡ 50
58049/45-RS ㅡ 62
58049/34 X2 ㅡ 50
NA6907A 35 55
NA6908A 40 62
NA608 40 65
NA611 55 85
RNA602A 80 32
RNA6903X2A 80 30
RNA6904A 80 37
RNA69/28A 80 45
RNA6906A 80 47
RNA6907A 80 55
RNA6909A 80 68

Needle Roller Bearings

Long cylindrical roller bearings

Long cylindrical roller bearings share similar characteristics with needle roller bearings but have larger radial cross-sectional dimensions, allowing them to support higher radial loads. While both types have a length-to-diameter ratio exceeding 3, a key distinction is in the roller length: long cylindrical rollers are longer than 5 mm, whereas needle rollers are shorter. Despite the structural similarities, these bearings are designed exclusively for pure radial loads and do not accommodate axial displacement between the shaft and the bearing housing. Additionally, any angular misalignment between the inner and outer rings is not tolerated.

Key Features:
  • Higher Radial Load Capacity: Due to their larger radial dimensions compared to needle roller bearings.
  • Limited Axial Displacement: Not designed to handle axial loads or misalignment.
  • Typical Applications: Suitable for machinery requiring compact yet robust support for high radial loads.
Designation Principal dimensions Basic load ratings Limiting speed
Dynamic Static Grease Oil
d D B Cr Cor RPM RPM
mm mm mm KN KN r/min r/min
NAOL612WB 60 120 58 161.4 201.7 5556 7000
NAOL612WBJ 60 120 58 148.9 186.2 5556 7000
NAOL612WBJW 60 120 58 161.4 201.7 5556 7000
NAL4120M/YA 100 165 65 326 524 2000 3000
NNAL6036X2M 180 280 219 1490 3240 1600 2500
254941HKU 206.38 285.75 222.23 1330 3960 1500 2200
NNAL6209.55Q1/
C9W33XYB2		 209.55 282.58 236.53 1330 3960 1500 2200
NAOL644 220 380 175 1814.4 2268 1333 1680
NAOL648 240 380 100 1054 1317.5 1290 1626
NAOL4148 240 400 160 1736 2170 1234 1555
NAOL6/282WBJR 282 334 87 829.6 1073 1299 1636
NAOL671 355 470 110 1418.1 1772.6 874 1101
NAOL3876X1 380 485 75 846 1057.5 797 1004
NAOL690 450 590 100 1434.4 1793 615 763
NAOL38/850 850 1030 136 4121 5151.6 234 295
Designation Principal dimensions
d D
mm mm
NAOL612WB 60 120
NAOL612WBJ 60 120
NAOL612WBJW 60 120
NAL4120M/YA 100 165
NNAL6036X2M 180 280
254941HKU 206.38 285.75
NNAL6209.55Q1/
C9W33XYB2		 209.55 282.58
NAOL644 220 380
NAOL648 240 380
NAOL4148 240 400
NAOL6/282WBJR 282 334
NAOL671 355 470
NAOL3876X1 380 485
NAOL690 450 590
NAOL38/850 850 1030