Cylinder tubes, piston tubes and piston rods

The close dimensional tolerances, low eccentricity and high degree of straightness are characteristic of cylinder tubes, piston tubes and piston rods. Their surfaces are distinguished by low roughness values and particular resistance to corrosion.

BENTELER Distribution offers the manufacturers of hydraulic and pneumatic cylinders a wide assortment of high quality tube and piston products. On request, we also supply the products prefabricated. 

Ready to use cylinder tubes

Standard

EN 10305-2

Dimensions

30 x 5 mm to 140 x 7.5 mm

Tolerances

outside diameter acc. to EN 10305-2

inside diameter acc. to H9, ISO 286 part 2

Lengths

5 to 7 m

other lengths and fixed lengths on request

Delivery conditions

+C (BK) cold finished

+SR

Materials

steel grade (EN)

E355

other materials on request

Surface roughness

Ra max. 0.8 μm, exceptions admitted up to 1 μm

Testing

eddy current testing acc. to ISO 10893-10

Certification

3.1 acc. to EN 10204

other certifications on request

Seamless, cold formed precision steel tubes for the production of piston tubes

Standard

EN 10305-1

Dimensions

35 x 3.5 mm to 300 x 25 mm

Tolerances

outside diameter acc. to customer specifications

Delivery conditions

+C (BK) cold finished, hard

+SR (BKS) cold finished and stress-relief annealed

+N (NBK) normal annealed

Materials

steel grade (EN)

E355

other materials on request

Certification

3.1 acc. to EN 10204

other certifications on request

Honed or skived and roller burnished cylinder tubes

Standard

EN 10305-1/-2

Dimensions

30 x 5 mm to 300 x 25 mm

Tolerances

outside diameter acc. to EN 10305-1/-2

inside diameter acc. to H8, ISO 286 part 2

Lengths

5 to 8 m

other lengths and fixed lengths on request

Delivery conditions

+SR (BKS)

Materials

steel grade (EN)

E355

other materials on request

Surface roughness (inside)

Ra max. 0.3 μm acc. to EN ISO 4287

Certification

3.1 acc. to EN 10204

other certifications on request

 

 

Cylinder tubes suitable for honing and roller burnishing

Standard

EN 10305-1/-2

Dimensions

30 x 5 mm to 300 x 25 mm

Tolerances

outside diameter acc. to EN 10305-1/-2

Delivery conditions

Materials

+SR

steel grade (EN)

E355

other materials on request

Surface treatment

inside suitable for honing or skiving and roller burnishing

Certification

3.1 acc. to EN 10204

other certifications on request

Hard chromed bars for piston rod applications

Dimensions

outside diameter 8 to 250 mm

Tolerances

outside diameter 8 to 18 mm acc. to f8

outside diameter 20 to 250 mm acc. to f7

other tolerances on request

Materials

material number

1.5217

1.1213*

1.1303*

1.7225*

1.1191*

steel grade (EN)

20MnV6

Cf 53 (DIN)

38MnVS6

42CrMo4 + QT

C45E

other materials on request

* also induction hardened

Surface

chromed

double chromed and NICROM (nickel/chrome) on request

Ra max. 0,25 μm

Chrome

 

thickness

min. 15 μm for an outside diameter of 8 to 18 mm

min. 20 μm for an outside diameter of 20 to 250 mm

hardness

min. 850 HV 0.1

Corrosion resistance

min. 200 h in NSS rating 9 

Testing

corrosion testing acc. to ISO 9227

Certification

3.1 acc. to EN 10204

other certifications on request

Hard chromed piston tubes

Standard

EN 10305-1

Dimensions

16 x 3 mm to 140 x 10 mm

Tolerances

outside diameter acc. to f7

Delivery conditions

+C (BK) cold finished, hard

+SR cold finished and stress-relief annealed

+N normal annealed

Materials

steel grade (EN)

E355

other materials on request

Surface

chromed

double chromed and NICROM (nickel/chrome) on request

Ra max. 0,25 μm

Chrome

 

thickness

hardness

min. 20 μm

min. 850 HV 0.1

Corrosion resistance

min. 120 h in NSS rating 9

Testing

corrosion testing acc. to ISO 9227

Certification

3.1 acc. to EN 10204

other certifications on request

Cylinder tubes, piston tubes and bars Cylinder tubes, piston tubes and bars