KDB DB- B (Bronze)

• KDB DB- B

• Suitable for dry running
• Low coefficient of friction
• Hydrodynamic operation possible
• Low wear
• Good sliding characteristics
• Forming a transfer film can protect the mating metal surface
• Suitable for rotary and oscillating movement
• Very high chemical resistance
• Low absorption of water and swelling
• Because of the lead, can not be used in food industries.

• Can meet the demanding criteria for long life and trouble-free performance with or without lubricant, of high safety factor even…
• Same as the DB-B bushing, but especially for high chemical resistance request.
• Steel metallurgy industry such as bushes for roller grooves for successive casting machines, cement grouting pumps
  and screw conveyers for cement, it can also be composed in steel housing or fabricated into flanged bushes which can
  move both in radial and in axial directions.
• The bearings are particularly appropriate for high temperature environment where no oil is efficient and the machine
  must be under successive long period working condition.

KDB DB-R(Reciprocating)

• KDB DB-R

• 1. PTFE, polymer fibers mixture 0.01~0.03mm, lead-free provides an excellent initial transfer film which effectively coats the mating surface of the bearing assembly, forming an oxide type solid lubricant film.
• 2. Sintered bronze powder 0.20~0.35mm, provides max. thermal conductivity away from the bearing surface, also serves as
  a reservoir for the PTFE mixture.
• 3. Steel backing, provides high load carrying capacity, excellent heat dissipation.
• 4. Copper/Tin plating 0.002mm, provides good corrosion resistance.

• Suitable for high duty, oil lubricated, hydraulic applications
• Excellent wear resistance
• Low static and dynamic friction coefficient
• High resistance to both cavitation and flow erosion damage of the poly bearing surface by the lubricant
• Good sliding characteristics
• Forming a transfer film can protect the mating metal surface
• Suitable for rotating, reciprocating, sliding and oscillating application
• High chemical resistance
• Low absorption of water and swelling
• Because of the lead-free, can be used in food industries

• Developed for high duty, oil lubricated, hydraulic applications…
• Automotive suspension struts, shock absorbers guide bushing, hydraulic cylinders, gear pumps and motors and axial
  and radial piston pumps and motors. DB-R is designed for use mainly under lubricated lubrications and shows excellent wear resistance, low static and dynamic friction coefficient.

KDB DB-S(Stainless Steel)

• Chemically resistant due to stainless steel backing,provides high load carrying capacity, resistance in corrosive environments.

• KDB DB-S

• 1. PTFE, polymer fivers mixture 0.01~0.03mm, lead-free provides an excellent initial transfer film, which effectively coats the mating surface of the bearing assembly, forming an oxide type solid lubricant film.
• 2. Sintered bronze powder 0.20~0.35mm, provides max. thermal conductivity away from the bearing surface, also serves as a reservoir for the PTFE mixture.
• 3. Stainless steel backing, provides high load carrying capacity, very high level of resistance in corrosive environments.

• Printing, Food & Drug machines and Chemical plant and plating equipment etc.

POM BEARING (KDB DB-2)

• KDB DB-2

• 1. POM 0.30~0.50mm, has high wear resistance and low friction even only minute quantities of lubricant are supplied, this bearing surface carries a pattern of circular indents which should be filled with grease on assembly of the bearing.
• 2. Sintered bronze powder 0.20~0.35mm, provides max. thermal conductivity away from the bearing surface, also serves as a reservoir for the resin mixture.
• 3. Low-carbon steel, gives exceptionally high load carrying capacity, excellent heat dissipation.
• 4. Copper plating 0.002mm, good corrosion resistance.

• Recommended for application involving intermittent operation or boundary lubrication…

• Automotive : suspension joints, kingpin assemblies and stub axles of tucks, automobile driving joint hinges, steering and other linkages, articulation joints, rear chassis hinges, fairleaders rollers…
• Machine tool building industry : spindles in drill, grinding, and milling machines, ram guide plates in multiram presses…
• Machine tool building industry : spindles in drill, grinding, and milling machines, ram guide plates in multiram presses…
• Agricultural equipment: gearbox, clutch, bale trips and wheel caster swivels for bale accumulators, front axle pivot bearings, steering idler box bearings and kingpin bearings for harvesters…
• Be especially well-suited for applications where lubricant can not be supplied continuously or repeatedly.

Outside tolerance of standard metric cylindrical bushes

Outside diameter	Tolerance of outside diameter
D ≤ 10	+0.055 +0.025
10 < D ≤ 18	+0.065 +0.030
18 < D ≤ 30	+0.075 +0.035
30 < D ≤ 50	+0.085 +0.045
50< D ≤ 80	+0.100 +0.055
80< D ≤ 120	+0.120 +0.070
120< D ≤ 180	+0.170 +0.100
180< D ≤ 250	+0.210 +0.130
250< D ≤ 305	+0.260 +0.170