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| Standard
Cylindrical and Controlled Contour Rollers |
These rollers are divided
into three classes:
- 1st class rollers with a flat
ground head
- 2nd class rollers with a flat ground
head
- 2nd class rollers with a flat non-ground
head
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Most
Common Sizes of Cylindrical Rollers
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D x L (mm)
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D x L (mm)
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D x L (mm)
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D x L (mm)
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2.5x5
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6x8
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8x8
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13x20
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3x4
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6x10
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8x10
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14x14
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3x5
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6x12
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8x12
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14x20
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4x4
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6x15
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8x14
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15x15
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4x5
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6x17.8
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8x16
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15x22
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4x6
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6x18
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8x20
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16x16
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4x8
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6x21.8
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9x9
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16x24
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4x10
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6x24
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9x14
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17x17
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4x12
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6.5x6.5
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10x10
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18x18
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5x5
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6.5x9
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10x14
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18x16
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5x8
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7x7
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11x11
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19x19
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5x10
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7x12
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11x15
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20x20
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5x12
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7x14
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12x12
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20x30
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5x15
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7x18
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12x18
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22x34
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6x6
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7.5x7.5
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13x13
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Tolerances
- 1st Class Rollers with a Flat Ground Head
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Diameter
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Diameters in mm
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Max Orthogonality Error
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Max Roughness
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from 2.5 to 26
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+5-10µ
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2µ
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0.8µ
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6µ
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0.1µ
Ra
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from 26 to 50
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+5-10µ
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3 or 4µ
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1.2µ
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10µ
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0.15µ
Ra
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Length
From 3mm to 15mm : 0 - 30µ
(it is also possible to supply the lengths classified in groups
of 6µ).
From 15mm to 50mm : 0-50µ
The first class rollers can
have enhanced variants such as:
- diameter
selection in groups of 1µ
- super
finish of the diameter to reduce surface roughness to
a value of Ra=0.04 and circularity value within 0.5µ
- controlled
contour "ZB" profile, that is with the roller
generating lines suitably shaped towards the extremities
so as to allow a better distribution of loads in the case
of rollers subjected to heavy stresses
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Tolerances
- 2nd Class Rollers with a Flat Ground Head
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Diameter
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Diameters in mm
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Max Orthogonality Error
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Max Roughness
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from 2.5 to 50
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+5-10u
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5µ
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1.5µ
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10µ
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0.15µ
Ra
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Length
From 3mm to 15mm : 0 - 30µ
From 15mm to 50mm : 0-50µ
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Tolerances
- 2nd Class Rollers with a Flat Non-ground Head
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Diameter
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Diameters in mm
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Max Roughness
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from 3 to 12
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+5-10µ
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in 5 ex 10µ
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2µ
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0.2µ
Ra
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Length
From 3mm to 50mm : 0 - 200µ
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