Project Description

Trusted Oilless Bearings services

Trusted & reliable Bronze Oilless Parts services

Trusted handyman services

A manufacturing consultant and engineer, supplies a broad range of standard bronze oilless parts and self-lubricating bushing, wear plates for for dry applications

Maintenance Solutions for Bearing

Discover the maintenance-free plain bearing product range of viiplus. Contact the manufacturer directly.

oil-free bearing

Contact Us

Get custom engineered solutions at Viiplus. Call us or visit today!

Precision Bearing

Unique design solutions to complex problems and an unparalleled level of service

Custom Service

Custom bearings designed to provide maximum capacity.

Bearing Maintenance

Bearings are important mechanical components that help in maintaining the linear and rotational movements of a machine and it is important they are maintained properly to ensure long operational life.

Bearings play a significant role in the free and unrestricted movement of mechanical parts or components, from your car wheels to your skateboards as well as many other things too. Bearings bear the weight of the load and make things move without any or with much less friction. In a world without bearings, mechanically moving parts will malfunction and stick, preventing smooth operation. Bearing life can be affected based on the type of bearing, the load they are asked to carry, and the maintenance schedule. Properly maintained, bearing life can be extended and downtime can be reduced.

Fast Deliver

Improve Efficiency

oilless bearing

Bearing Maintenance-free | Help Ensure A Longer Lifespan

  • Handle with care

Bearings are delicate enough to get damaged quickly. As such, it is very important that they are stored horizontally in a clean and dry environment with their packaging intact. Do not expose them to any airborne contaminants, as even a tiny speck of dirt can cause premature failure. Never hammer or pound them, or apply a direct force on it or its outer ring, which can cause damage to the rolling elements, resulting in misalignment. The most important thing to remember is to never remove bearings from their packaging until ready for use.

  • Check the bearing housing and shaft

Whenever a bearing is used for mounting, it is crucial that the housing and shaft are inspected for any sort of physical condition or damage. Always use a soft cloth to wipe the surfaces clean and make sure any nicks and burrs are removed.

  • Mount the bearings correctly

The method used to mount the bearings depends on the type of bearing. For example, bearings with cylindrical bores are generally mounted through a press-fit method. Bearings with tapered bores can be mounted directly on tapered or cylindrical shafts with the use of tapered sleeves. However, pressure should be applied only with a press fit because without it the raceways can become damaged.

  • Avoid preheating or overheating

The maximum heating allowed on the bearings depends on the heat treatment of the material. If they are heated above the permitted limit, they can permanently deform or soften the bearing steel, lowering load carrying capacity and resulting in a failure. Always heat the bearings using induction heaters, and never with an open flame.

  • Always use the proper tools

Specialized tools like bearing pullers, bearing fitting tool kits, oil injector kits, hydraulic nuts, or induction heaters should be used in the mounting and dismounting processes. These tools ensure the smooth process of mounting or dismounting, in order to minimize the risk of damage.

  • Avoid corrosion

It is crucial that you should not expose bearings to the presence of water for a long time, as it will lead to rust and corrosion. It will also cause the premature failure of the bearings, which can affect the performance and productivity of the machine. As a result, it will increase your operating costs. Also, make sure to wear gloves when handling bearings. Perspiration can also lead to rust and corrosion.

  • Proper lubrication

If you want to have a prolonged life of your bearings, it is crucial that they should be properly lubricated. The correct lubricant depends on the environmental conditions, temperature, speed, and load. In this case, it is advisable that you should follow your manufacturer’s recommendations.

oil-free bearing

Amazing features

Lubrication System Maintenance

To keep your machines operating at their peak it is important to keep your lubrication system in tip-top shape too. Also, inspections bearings should be performed periodically to detect leaks that can be repaired before they become serious problems. With routine lubrication-bearing system maintenance, many common problems can be avoided. Here is a checklist to help you implement a lubrication system maintenance program that will keep your machines operating smoothly.

Top quality

Custom Service

Advantages Of Oilless Bearings & Wear Plates

  • Higher load bearing capacity and reduce cost

  • Higher resistance to vibration and increased lifetime

  • Easy installation

  • Lower souring costs

  • Increased shaft tolerances possible

bronze wear plates
sleeve bushes

Self-Lubricated Technology

Our portfolio offers maintenance-free oilless bronze bushings for high loads and long lifetime according to custom drawings and common standards (VDI/BAK, NAAMS).

You can also use our self-lubricating bronze oilless parts configurator.


We’re here to help

Provides services and quality bronze oilless products to provide you with the best possible solutions for your needs at any time.

  • Focus on reducing or eliminating friction, wear and lubrication bronze oilless parts

  • Manufacturers of maintenance-free sliding elements

Choose your Application

Bronze Oilless Bearings for off-highway equipment. No Need for Complex Greasing System.

Finishing Parts Main Base Alloy

& Chemical Compositions
High Brass
Special Brass
Tin Bronze
aluminium bronze
Tin bronze
Cast Iron HT250
Cu% 65 65 85 80 88
Sn% 5 12
Pb% 5
Zn% 25 25 5
Ni% 5
Al% 6 6 10
Fe% 5
Mn% 4 4
g/cm 3
8.0 8.0 8.8 8.3 8.8 7.3
Hardness >210 >180 >70 >150 >80 >160
Tensile Strength >750 >550 >200 >500 >360 >250
Elongation >12 >12 15 >10 >8
Coeicient of
linear expansion
1.9·10 -5 /℃ 1.9·10 -5 /℃ 1.8·10 -5 /℃ 1.6·10 -5 /℃ 1.8·10 -5 /℃ 1.0·10 -5 /℃
Limit Temp. 300~400 300~400 400 400 400 400
Max. Load N/mm 2 100 80 60 50 70 10
Max. Speed m/min 15 15 10 20 10 15
Max. PV N/mm2·m/min 200 200 200 200 200 40
400N/mm2 <0.01 <0.01 <0.05 <0.04 <0.05 <0.015

Friction of coe. Oil 0.03; Dry 0.16

Alloy International Code

Custom Size Options, machining bronze bushings and a supplier of solid bronze oilless bushes and plate delivered on time and on budget.

Oilless Bushing Alloy International Code

Chinese Code
International counterparts Applications
ISO 1338
CuZn25AI6FeMn3 CuZn25AI6FeMn3 H5102
High-load, low speed, general use
CuZn25AI6FeMn3 CuZn25AI6FeMn3 H3102
Super high load, low-speed, high
CuAI10Fe3 CuAI10Fe3 H5114
Medium load, medium-speed,
general use
CuSn5Pb5Zn5 QSn5-5-5 H5111
Medium load, medium-speed
Fe250 ASTM
low-load, low-speed

Solid Lubricant

Solid Lubricant Features Typical application
SSL1(PTFE etc + Add) Excellent resistance against chemical attacks
and low friction. Temp limit 400℃
Suite for general machines and under
SL2(PTFE etc + Add2) Lowest in friction and good of water
lubrication,Temp.limit 300℃
Ship, hydraulic turbine, gas turbine etc.