what's loose cylindrical rollers? where's cylindrical rollers for bearings manufacturer? how to buy precision cylindrical rollers or needle rollers?
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YDTech® manufacturer of loose columnar rollers and cylindrical roller bearing; supplier of cylindrical rollers for axial bearing parts as rolling element units in china.

What's cylindrical roller?

the cylindrical rollers, it is meaning the outer surface is substantially straight and parallel to the axi of the roller. the cylindrical rollers are precision parts for bearing.

we have over 20 years of manufacturing experience of precision rolelrs. we had most stock, delivery time: send to europe, USA, or canada only 3-5 work days

through some special machines and production process. we have solved the problem how to make ultrashort, special chamfer and round cylindrical rollers in mass production.

cylindrical rollers are remarkable for their high mechanical strength and long lasting functional life. cylindrical rollers had multiple uses in a variety of industries including automotive, truck: linear lead rails, ultra-thin bearings, needle bearings, one way clutches, one-way bearings, needle bearings ,subminiature motor and so on.

the ground ends needle rollers are mainly used as bearing rolling elements to transmit torque and reduce friction. they can also serve as precision shafts or as precision locating pins

technical parameters of cylindrical rollers

cylindrical columnar rollers,cylindrical rolling elements
diameter tolerance +0/-0.005, +0/-0.003, +0/-0.002, grouping for 0.001mm or 0.0005mm
length tolerance +/-0.015, +/-0.01, +0/-0.015, +/-0.005,+0/-0.005
radius R0.03-R0.3
parallelism 0.01, 0.005
perpendicularity 0.01, 0.005
circularity 0.001
cylindricity 0.001
roughness Ra0.1
precision cylindrical rollers for bearings, roller bearings parts, cylindrical rolling elements

sizes of cylindrical rollers elements

cylindrical rollers,columnar rollers, bearings parts
sizesDwLwrsminrsmax sizesDwLwrsminrsmax
3x3330.20.43x5350.20.4
3.5x53.550.20.44x4440.20.4
4x6460.20.44x8480.20.4
4.5x4.54.54.50.20.64.5x64.560.20.6
5x5550.20.65x8580.20.6
5x105100.20.65.5x5.55.55.50.20.6
5.5x85.580.20.66x6660.20.6
6x8680.20.66x106100.20.6
6x126120.20.66.5x6.56.56.50.20.6
6.5x96.590.20.67x7770.20.6
7x107100.20.67x147140.20.6
7.5x7.57.57.50.20.67.5x97.590.20.6
7.5x117.5110.20.68x8880.20.6
8x108100.20.68x128120.20.6
9x9990.30.79x109100.30.7
9x149140.30.710x1010100.30.7
10x1110110.30.710x1410140.30.7
11x1111110.30.711x1211120.30.7
11x1511150.30.712x1212120.30.7
12x1412140.30.712x1812180.30.7
13x1313130.40.813x2013200.40.8
14x1414140.40.814x2014200.40.8
15x1515150.40.815x1615160.40.8
15x2215220.40.816x1616160.40.8
16x1716170.40.816x2416240.40.8
17x1717170.41.017x2417240.41.0
18x1818180.41.018x1918190.41.0
18x2618260.41.019x1919190.41.0
19x2019200.41.019x2819280.41.0
20x2020200.41.020x3020300.41.0
21x2121210.51.121x3021300.51.1
22x2222220.51.122x2422240.51.1
22x3422340.51.123x2323230.51.1
24x2424240.51.124x2624260.51.1
24x3624360.51.125x2525250.51.1
25x3625360.51.126x2622260.51.1
26x2822280.51.126x4022100.51.1
28x2828280.61.428x4428440.61.4
30x3030300.61.430x4830480.61.4
32x3232320.61.432x5232520.61.4
34x3434340.61.434x5534550.61.4
36x3636360.71.736x5836580.71.7
38x3838380.71.738x6238620.71.7
40x4040400.71.740x6540650.71.7
42x4242420.92.145x4545450.92.1
precision cylindrical rollers for bearings, roller bearings parts, cylindrical rolling elements

diameter and roundness of cylindrical rollers

IG=roller diameter gauge interval.
precision cylindrical rollers of loose roller bearings
grade Dw/mm VDwL IG regulation values ▽Cir
exceed tomaxmax
G0-1811-10,...,-10+1,...,+50.3
G0183011-10,...,-10+1,...,+50.4
G1-1821-10,...,-10+1,...,+50.30.4
G1183021.5-10.5,...,-1.50+1.5,...,+60.5
G2-1831-10,...,-10+1,...,+50.5
G2183031.5-19.5,...,-1.50+1.5,...,+61.0
G230-32-20,...,-20+2,...,+61.5
G3-1811-10,...,-10+1,...,+51.0
G3183012-20,...,-20+2,...,+61.5
G330-53-24,...,-30+3,...,+62.5
precision cylindrical rollers for bearings, roller bearings parts, cylindrical rolling elements

V-block measurement for roundness of cylindrical rollers

precision cylindrical rollers of loose roller bearings
angle wave numbers
3579111315171921
60°C3--3--3--3
90°C22--22--22
120°C1221--122
precision cylindrical rollers for bearings, roller bearings parts, cylindrical rolling elements
crossed bearing rollers needle rollers tapered rollers cylindrical rollers dowel pins roller rings copyright©2017 YDTech®