OEM Cold Drawn Ready-to-Hone Tubes China Factory
Key Features Include:
Understanding Ready to Hone Tubes
Ready to Hone Tube is a precision cold drawn steel tube supplied with the internal bore prepared for final honing. It provides controlled machining allowance, stable dimensions, and good straightness, helping hydraulic cylinder manufacturers reduce preliminary machining before achieving the required final bore size and surface finish.
Baokun supplies Ready to Hone Tubes in different steel grades, OD/ID sizes, wall thicknesses, lengths, and honing allowances for hydraulic cylinder and precision mechanical applications.
Technical Specifications of Ready to Hone Tubes
Materials:
ST52 (DIN 2391 ) 8732/8734(GOST)
E355 (EN 10305-1) 20# steel (GB/T 8163)
Other customized materials (can be provided according to customer needs)
Size range:
Outer diameter (OD):20mm-700mm (customizable)
Wall thickness (WT):2mm-60mm (customizable)
Length: Regular length is 6m, customized lengths such as 1m to 12m are also available.
Tolerance:
Inner hole size accuracy: H7/H8/H9, higher accuracy can be provided according to application needs.
Outer diameter accuracy: ±0.2mm (adjustable according to different standards and requirements).
Inner hole finish: usually Ra0.8–3.2 μm, finer surface treatment can be provided according to customer needs.
Surface treatment:
Surface smoothness: The inner hole is finely ground and polished, and the surface is smooth and burr-free to ensure smooth operation of the hydraulic cylinder.
Deburring: Deburring the inner and outer surfaces to ensure that the parts have no protrusions.
Rust-proof treatment: Oil-coated and rust-proof packaging can be provided to protect the product from corrosion during transportation.
Strength and hardness:
Tensile strength: usually between 500 MPa and 600 MPa (depending on material and specification).
Yield strength: usually above 350 MPa.
Hardness: usually between HB150 and HB200, depending on material.
Applications of Ready to Hone Tubes
Ready to Hone Tubes vs Honed Tubes
The main difference is the condition of the internal bore at delivery.
| Ready to Hone Tubes | Honed Tubes |
|---|---|
| Supplied with machining allowance for final honing | Supplied with the bore already finish-honed |
| Final ID, tolerance, and surface finish are completed by the customer | Final bore dimensions and surface finish are already achieved |
| Suitable for manufacturers with in-house honing equipment | Suitable for customers who want to reduce further bore machining |
| Offers more flexibility for different final bore requirements | Provides a more finished, ready-to-use cylinder tube |
| Usually requires an additional honing process before assembly | Can normally proceed directly to further cylinder fabrication |
Choose Ready to Hone Tubes when you need control over the final bore specification. Choose Honed Tubes when you want the internal surface already finished to the required size and condition.
