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HONES - Engine Cylinder Hones & Brake Cylinder Hones

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Honing is an abrasive machining process that produces a precision surface on a metal work piece by scrubbing an abrasive stone against it along a controlled path. Honing is primarily used to improve the geometric form of a surface, but may also improve the surface texture.

Typical applications are the finishing of cylinders for internal combustion engines, air bearing spindles and gears. There are many types of hones but all consist of one or more abrasive stones that are held under pressure against the surface they are working on.
Other similar processes are lapping and superfinishing.

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Honing uses a special tool, called a honing stone or a hone, to achieve a precision surface. The hone is composed of abrasive grains that are bound together with an adhesive. Generally, honing grains are irregularly shaped and about 10 to 50 micrometers in diameter (300 to 1,500 mesh grit). Smaller grain sizes produce a smoother surface on the workpiece.
A honing stone is similar to a grinding wheel in many ways, but honing stones are usually more friable so that they conform to the shape of the workpiece as they wear in. To counteract their friability, honing stones may be treated with wax or sulfur to improve life; wax is usually preferred for environmental reasons.
Any abrasive material may be used to create a honing stone, but the most commonly used are corundum, silicon carbide, cubic boron nitride, or diamond. The choice of abrasive material is usually driven by the characteristics of the workpiece material. In most cases, corundum or silicon carbide are acceptable, but extremely hard workpiece materials must be honed using superabrasives.

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The hone is usually turned in the bore while being moved in and out. Special cutting fluids are used to give a smooth cutting action and to remove the material that has been abraded. Machines can be portable, simple manual machines, or fully automatic with gauging depending on the application.
Modern advances in abrasives have made it possible to remove much larger amount of material than was previously possible. This has displaced grinding in many applications where "through machining" is possible. External hones perform the same function on shafts.


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PART NO. 15000

Lisle hones have the micrometer head hones in which assures accuracy in feeding. The hone expands quickly to cylinder size with fast action rack and pinion. Bottom guard plate on the hone helps prevent stones from accidentally hitting the crankshaft. Universal joint action makes grinding of back cylinder easy. Clip-on honing stones and wipers are easily changed in a few seconds. Honing Stones are available in five grits. Use with heavy-duty 1/2" drill. Standard hone range 3" to 4 1/4". Big range (2 3/4" - 10 1/4") with additional rack sets and stone sets. Long 5" stones cut faster, more accurately.

Includes the following: Cylinder hone body with 1 set of 15540 standard range rack (range is 3" to 4 1/4"). 1 set each of 15500 coarse stones and 15510 medium stones, cleaning brush and dressing paddle in a sturdy storage case.

Available Individually:

Cylinder Size Range Rack Set
Part No. Weight 80 Grit 180 Grit 280 Grit 500 Grit Special Hard Bond for Steel 150 Grit
2 3/4"- 3 3/4"
69.8-95mm 15550
1lb 15680
*15740 15690 15700 ----- -----
3"-4 1/4"
76.2- 108mm 15540
1lb. 2oz. 15500 15510 15520 15990 15490
4"-61/4" 100-158mm 15530
1 lb. 6oz. 15500 15510 15520 15990 15490
6 1/8"-101/4"
155-260mm 15560
1lb.14oz. 15500 15510 15520 15990 15490


TOLEDO 301044
- 50-135MM


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This comprehensive specialist tool is designed for honing and deglazing engine cylinder bores
• Three legs featuring 100mm long, medium grit hone stones remove glaze in engine bores
• quickly and easily
• The centre spring uses variable spring tension to enable self centring and variation of contact intensity in the bore
• Operation is through a flexible shaft drive to ensure smooth honing
• Suitable for use under bonnet or on engine stand
• Replacement honing stones available
• Fitted with 3 x 100mm medium grit hone stones
• Bore capacity (ID): 50-135mm
• Overall length: 365mm
Spares 301050│ Medium grit hone stone set, 100mm 3 Pc.

301062│ Coarse grit hone stone set, 100mm 3 Pc.