The order of selection for punch lubrication Hitachi DH24PC3

increase in terms of uptime perforator Hitachi DH24PC3 contributes to timely compliance with maintenance deadlines.
Maintenance Punch is timely replacement of the rubber O-rings, lubricants and worn parts.

The rotary hammers Hitachi DH24PC3 recommended to use those types of lubricants, which advises the manufacturer.A manufacturer recommends a lubricant specifically designed for rotary Hitachi.Hammer Hitachi considered the Japanese, although made in China.

lubricants are divided by type:

• for liquid lubricants, which are refined petroleum oils with additives used for lubrication of high-speed, legkonagruzhaemyh nodes;
• on plastic or lubricating oil lubricants made from petroleum or synthetic oils with various additives and thickeners.

main characteristic is determined by the lubricant viscosity, acid value, melting point.

Features oils used tool manufacturing companies, often kept secret.This is done so that a user who has bought an instrument of a company is not puzzled, and bought lubricant manufacturer recommended tools.

The rotary hammers recommended plastic lubricants intended for tyazhelonagruzhnyh bearings that operate under conditions of frequent reverses, at low speeds.In addition to greases punch perform a role and a sealant and preservative.

Knowing the requirements and conditions of the individual nodes punch, you can pick up grease from the group of domestic lubricants.
From domestic lubricants have similar characteristics such lubricants as Litol-24, 203-CIATIM, CIATIM-221F.

What lubricant is used in the punch Hitachi DH24PC3

The rotary hammers Hitachi DH24PC3 applies three types of lubricants: for bearings and gears, for rubber O-rings, liners for the Boers.

Any grease must meet certain requirements:

• desired viscosity;
• melting or ignition temperature;
• shear strength;
• dropping point.

The Hitachi rotary hammers are used bearings that do not require additional lubrication.But lubricate its socket and the outer diameter of the cage is necessary for installation of the bearing.
The perforator Hitachi DH24PC3 uses the following bearings:

• bearing 37 mm, article 6904DD, dimensions 20x37x9, the Russian equivalent of 1,000,904, poz.15;
• bearing 19 mm, article 626VVM, 6x19x6 dimensions, the Russian equivalent of 26 poz.56;
• bearing 22 mm, article 608DDM, 8x22x7 dimensions, the Russian equivalent of 80018, poz.60;
• bearing 22 mm, article 608VVM, 8x22x7 dimensions, the Russian equivalent of 60018, poz.66.

new grease is applied to the cleaned surface clean parts or assembly.
Grease disassembled the gun has a dark muddy color.This color is due to the wear of metal parts and rubber sealing rings.

Prior to assembly all parts are thoroughly washed in kerosene or gasoline and dried.

Do not allow solvents to rubber products.

lubricant necessarily replace.

lubrication of bearings and gears

Typically, rotary hammers are used bearings, grease tucked desired.However, when installing the bearings must be lubricated socket for better compression.
Bearing 6904DD poz.15 mounted in the housing position 10, which is pressed into the barrel poz.24.On bearing impact shock loads.

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Node pressing the barrel is preferable to lubricate the special Hitachi's grease.But domestic lubricants manufacturers provide at least good results.The photo shows lubricant produced by Russian manufacturers specifically for the lubrication of gearboxes.

It is recommended for lubrication of gearboxes, gears, clutch bearing drunk.

Grease rubber sealing rings

rubber O-rings at work are exposed to excessive heat due to friction and the air pressure in the piston.If the sealing ring is not lubricated, the friction increases, which leads to further heating.By installing the new O-rings, be sure to lubricate the place of their installation.We recommend using Hitachi's grease.

But if you lubricate the rubber sealing ring of the domestic lubricant, which dropping the temperature exceeds + 100º, the result will be good enough.The main thing is to use a lubricant which not only has high lubricity and has sealing properties.
best to use the domestic lubricant Litol 24.

There are two warnings:
- if your instrument warranty, and you have decided to spend their own technical service, it is recommended to use the lubricants that insists to apply the manufacturer;
- lubrication of domestic manufacturers maintain their properties in less time and requires more frequent replacement.

for shank drills Lubricants

Hammers Hitachi DH24PC3 equipped with keyless chuck type SDS-plus.cartridge design provides for the use of the working tool with special shank.Reliability capture desktop tool provides a special shank design.But in the process it requires periodic tool change.
special lubricants are used to more easily detach the working tool of the keyless chuck.

Usually hammers manufacturers recommend the use of special lubricants for the Boers.For lubrication in rotary hammers drills Hitachi DH24PC3 used lubricants, developed by Hitachi.

Russian manufacturers produced a number of lubricants that are under the same lubricating properties are much cheaper.

Lubricants domestic producers

few words about the Russian lubricants.
Grease Litol-24 manufactured according to GOST 21150-87, based on a mixture of mineral oil and lithium soap.The mixture was added to anti-acid and adhesive additives.
Litol-24 recommended for use in friction units, rolling and sliding bearings, gears where the operating temperature does not exceed + 120 ° C.
Grease Ciatim -203 manufactured according to GOST 8773-73 from the oil transformer oil with the addition of a thickener lithium soap and asidola and additives to increase the viscosity and increasing protivozadirov.Recommended for lubrication shank drills in keyless chuck SDS.
Grease Ciatim -224 produced in accordance with GOST 9433-80, is a heat-resistant silicone fluid, as a thickening agent added soap with anti-acid additive.Lubrication is inert to the rubber, and it is recommended to lubricate O-rings.

Conclusions:

• use lubricants domestic producers permitted;
• domestic lubricants are much cheaper;
• Russian producers applying grease, be aware that their replacement should be more frequent;
• not allow the tool overheating, do not apply pressure on the tool in the "Blow" mode;
• constantly check the condition of carbon brushes;
• the availability of funds use those lubricants that are recommended by the manufacturer of tools.