Gehring TN, TLN series Honing Tools

Gehring TN, TLN series Honing Tools

Original - Gearing - Adjustment - Honing Tools

The Original Gearing Adjustment Hones, a result of extensive experience in precision honing tool manufacturing, are tailored to meet specific machining requirements. These tools excel in honing interrupted bores found in hydraulic and pneumatic valve bodies, eliminating the need for conventional lapping in most cases. This results in significant cost savings, quickly offsetting acquisition costs.

Key features of these honing tools include:

Form-fitting, very rigid construction

Flat feed cone with positive retraction

Semi-circular honing stones fully supported by robust stone carriers

Parallel stone feed over the entire stone length

These features allow the production of functional and geometrically flawless bores:

Cylindrical bores without significant edge drop, even when interrupted by control slots or similar features

Round bores, even with cross bores or longitudinal grooves

Bore geometry and tolerance are within a few micrometers. The backside of this document illustrates examples with achieved times and accuracies. For special cases, optimal values can be determined in our testing department.

Considerations for choosing Adjustment Hones:

Honing stone length is not fixed but should be determined based on bore conditions. A relatively long stone is ideal for bore straightness.

Stock removal should not exceed an average of mm on the diameter. For larger stock removal, consider two operations: rough honing with precision hones and finish honing with Adjustment Hones.

Positive retraction is essential, and suitable joint tools are available from us.

Our engineers are available to advise on specific machining requirements. Our extensive global experience is your most valuable asset.

Standard Adjustment Hones: Connection Tool: Rigid Link KBR Honing Stone Length/Area: Various Honing Tool Designation: Various Honing Stone Designation: Various Connection Length: Various

Example: Bore diameter 15 mm, bore length 50 mm. Hone for operating range D 15-16 mm and honing stone length L 35 mm. TLN 14-21/35/180 with honing stones TLN 15-21/25/0-8. When placing your order, please state the type of material to be machined, the honing allowance, and the specified surface finish. If possible, provide a workpiece drawing.

Machining Examples of Control Housings:

Example 1: Material/Preparation: Cast iron/fine-bored Tolerances Before Honing: Taper: Out-of-roundness: Roughness Before Honing: 10 my-m Rt Honing Allowance: 0.06 mm Actual Honing Time: 20 sec Tolerances After Honing: Taper, Out-of-roundness: Roughness After Honing: Approx. 2 my-m Rt Service Life of Honing Stones: Approx. 5,000 housings Hone Used: TLN 16-21/60/205 Honing Stones Used: Diamond K 300-400 Pr. electroplated Machine Type: Hand Honing Machine H 75

Example 2: Material/Preparation: Cast iron/fine-bored Tolerances Before Honing: Taper: , Out-of-roundness: Roughness Before Honing: 15 my-m Rt Honing Allowance: Actual Honing Time: 40-50 sec Tolerances After Honing: Taper: Out-of-roundness: Roughness After Honing: Rt Service Life of Honing Stones: Approx. housings Hone Used: Honing Stones Used: TLN Honing Stone Grade: Machine Type: Vertical Machine P 350

Our Manufacturing Programme includes hones, honing machines, sizing controls, fixtures, and transfer units for workpiece dimensions ranging from 3-1500 mm in diameter and 1-12000 mm in length, extendable to 24000 mm by reversing the workpiece.