What the Brush Assembly Does
Chain lubrication on a plant floor usually follows one of three routes. This page covers the third axis: the brush applicator end-piece that actually touches the chain and transfers oil onto the link plates and pins. It is a delivery component, not a complete system. For a full family overview, see chain oilers.
The assembly is a spring-loaded arm carrying a brush inside an aluminium housing. Oil arrives from an external feed through a G1/4 thread port or a push-fit connection for 6 mm tube, and the bristles wipe that oil onto the chain as it passes. A drip tray catches surplus oil. The unit mounts with two M8 bolts. It does not include a pump, a reservoir, or any control hardware; those belong to the feeding system upstream. If your application needs a self-contained hand unit instead, the manual chain oil lubricator is the separate product for that job.
Declared Specifications
| Brush widths | 25 mm, 40 mm, 60 mm, 80 mm |
| Chain width range | 10 mm to 120 mm |
| Bristle material, standard | Nylon |
| Bristle material, options | Brass, stainless steel |
| Oil feed port | G1/4 thread or push-fit for 6 mm tube |
| Arm type | Spring-loaded |
| Mounting | Two M8 bolts |
| Housing material | Aluminium |
| Supplied accessories | Drip tray and splash guard |
Choosing Brush Width
Work from the chain, not the brush: choose the smallest brush width that fully covers the narrowest chain the applicator will serve. A brush narrower than the chain leaves the outer rows dry, and a much wider one spreads oil past the links into the tray.
The four widths are 25 mm, 40 mm, 60 mm, and 80 mm, and the assembly suits chain widths from 10 mm to 120 mm. If one applicator must serve several chain sizes on the same drive, size it for the narrowest one and let surplus width overhang. Overhang is harmless; a dry edge is not.
Bristle Material Selection
Nylon is the standard bristle and covers most general-purpose drives where the chain runs in a normal machine environment.
Brass suits softer surfaces and where a gentler cleaning action is wanted. It removes light deposits without scoring the material it touches.
Stainless steel is for corrosive or washdown environments and for long wear where the bristles work continuously against a moving chain.
Whichever material you pick, the bristles are a wear item. Replace the brush as a single component when the tips flatten or stop carrying oil. The flat lubrication brush is a related end-piece for linear surfaces rather than chain runs.
Installation and Adjustment
Mount the applicator so the brush touches the chain lightly at a low point before the sprocket. Use the two M8 bolts and leave enough room to reach the adjustment.
The spring-loaded arm holds light contact on its own. Adjust the arm so the bristles just meet the chain with the tips slightly deflected, then stop. Recheck contact after the first running period and again whenever the brush is replaced.
Feed oil from the external supply through the G1/4 port or the push-fit connection for 6 mm tube. Whether the chain sees a steady wetting or a metered supply depends entirely on the pump upstream.
Keeping the Applicator Serviceable
Treat the brush as a consumable and the housing as a fixture. Inspect the bristle tips, check the spring arm, and confirm the feed port is clear. Check for weeping at the port threads and at the push-fit joint, and correct it before it reaches the floor.
For fast-running chains, suitability depends on how oil is delivered and on the oil viscosity. Share the chain speed and the viscosity you intend to run when you contact the team so the feed arrangement can be matched to the drive.
If the drive needs a complete automatic package rather than an end-piece, look at the heavy-duty chain oiler. The two work as a family: the oiler feeds, the brush delivers.
Frequently Asked Questions
Which chain widths does the brush assembly fit?
It suits chain widths from 10 mm to 120 mm, using one of four brush widths.
How do I pick the brush width for one chain?
Choose the smallest width that fully covers the narrowest chain on that drive.
Which bristle material should I choose?
Nylon for general duty, brass for softer surfaces, stainless steel for corrosive or washdown areas.
Does the brush suit fast-running chains?
Often yes, but it depends on oil delivery and oil viscosity. Share chain speed via the contact page.
Is the brush continuously wet or metered?
It follows the pump feeding it, so either a steady wetting or a metered supply.
Is the brush a wear part?
Yes. Replace it as a single component when bristle tips flatten.
Does the assembly include a pump and reservoir?
No. It takes oil from an external feed through the G1/4 or push-fit port.
How is the unit mounted and adjusted?
Two M8 bolts hold it. Adjust the spring arm for light contact before the sprocket.
What does the drip tray do?
It catches surplus oil, while the splash guard keeps oil inside the cover.
How do I get specifications and a quotation?
IsoHiTech Lubrication Systems, founded in 2023, engineering since 2006, builds and supports every unit. Email inquiry@isohitech.com for specifications and a quotation.
