What a Remote Grease Line System Is
A remote grease line system moves the service point away from the bearing. You install a fitting at each lubrication point, run a dedicated tube to a safe location, and terminate that tube at an anchor block. A grease gun or pump feeds each line without exposing you to moving parts or cramped access. Every tube fitting on this line system is reusable: slacken the compression nut, re-seat or re-cut the tube, and tighten again – no crimp sleeves to discard. Catalogs list this configuration as a remote grease line kit with reusable fittings; the component-level breakdown is in the remote grease line kit guide, and 6 mm compression-fitting runs are on the remote grease line with 6 mm nylon tube page. This page covers the line system level: the tube from bearing fitting to anchor block. If your machine uses a central station, see the remote grease manifold station page.
Declared Specifications
The table below lists tube sizes and run guidance. Use these values as a guide, then adjust for grease consistency, gun type, and site conditions. The working rating shown applies to the 6 mm line.
| Tube outside diameter | 6 mm |
| Tube outside diameter | 8.6 mm |
| Tube outside diameter | 11.3 mm |
| Run guidance, 6 mm tube, manual gun | about 5 m |
| Run guidance, 6 mm tube, electric gun | about 2 m |
| Run guidance, 8.6 mm tube | runs to about 12 m |
| Run guidance, 11.3 mm tube | longer or higher volume runs |
| Working rating, 6 mm line | 89 bar |
Run guidance is a practical target for grease delivery. A larger tube lowers resistance, while a smaller tube is easier to route through tight spaces. If your layout sits near a guidance value, choose the next tube size up.
Tube Size Selection
Start with the grease gun you will use. A manual gun works best with a 6 mm tube on runs up to about 5 m. An electric gun can push grease steadily, but the smaller tube still limits distance. For an electric gun, keep 6 mm runs to about 2 m. Step up to 8.6 mm tube when the run is longer, up to about 12 m. Use 11.3 mm tube for longer runs or higher volume. Thick grease, cold weather, and many bends increase resistance, so move up a size when the route is long or the grease is stiff.
Fittings and the Reuse Rule
Body fittings come apart and go back together when you reroute a line. The nut, sleeve, and body can be reused if they are clean and undamaged. The compression olive is different. It deforms when you tighten it onto the tube. Once crushed, it will not seal the same way again. Replace the olive at every reassembly. You can loosen the body fitting, pull the tube, and reroute it without buying a new fitting set. Fit a fresh olive, tighten the nut, and check the joint. When you have the layout and tube sizes, use the contact for a quote link to match fittings to your tube and ports.
Anchor Blocks and the No-Tee Rule
An anchor block collects the service ends of several lines at one safe point. Each line remains independent from the bearing to the block. Do not install a tee in a line to feed a second bearing. A tee splits flow unpredictably, because grease takes the path with the least resistance. One bearing may receive most of the grease while another starves. Keep one dedicated line per bearing. If two bearings are close together, run two tubes rather than a single tube with a tee. Group the lines at an anchor block and label each one. For the collection block itself, see the bare grease manifold block.
Routing and Protection
Support the tube along its run so it does not sag, rub, or vibrate. Use clamps or clips at regular intervals, and leave slack at bends and at the anchor block. Respect the bend radius given for the tube. A sharp bend can kink the tube and restrict grease flow. Keep tube away from heat sources and abrasive edges. Route behind guards where possible, and add a shield where chips or sparks fall. Use a brass elbow fitting where the tube leaves the anchor block or enters a tight machine zone. An elbow can guide the tube without forcing a tight bend.
Frequently Asked Questions
Why does each bearing need its own dedicated line?
A shared line lets grease take the easiest path, so some bearings receive little flow. One dedicated line per bearing makes each delivery point predictable.
Can the compression olive be reused?
No, the compression olive deforms when it is tightened onto the tube. Replace it at every reassembly to restore a secure joint.
What tube size should I use?
Start with 6 mm tube for a manual gun and short runs, and step up to 8.6 mm for longer runs. Use 11.3 mm tube when the run is long or the grease volume is high.
What thread forms are available?
Confirm the thread form at ordering so the fittings match your ports. Adapters exist to join common machine threads to the line fittings.
How long can the lines be?
With a manual gun, a 6 mm line can run about 5 m. An 8.6 mm line can run to about 12 m, while 11.3 mm tube supports longer runs.
Can lines be cut and remade in the field?
Yes, you can cut tube to length and remake a line at the machine. Fit a new compression olive and keep the body fittings for reuse.
How close to a heat source can the tube run?
Keep tube away from hot surfaces and moving parts that can radiate or conduct heat. If heat is unavoidable, add a shield and increase the distance.
Will the lines work with a battery grease gun?
Yes, but expect shorter runs because the gun delivers grease at a lower flow. Use the 6 mm run guidance: about 2 m for an electric gun.
How do I plan a full set of lines for one machine?
List every bearing, measure each route, choose tube size, and order fittings; use the contact page to review the layout. Then group service ends at your anchor block and label each line.
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.
