Fits the following chainsaws:
STIHL
029, MS290, 034, MS340, MS341, 036, MS360, MS361, MS362, 038, MS380, MS381, 039, MS390, MS391, 041, 044, MS440, MS441, 045, MS450, MS451, 046, MS460, MS461, 048, 065, MS650, MS651, 064, MS640, MS641, 066, MS660, MS661, MS500i
Cannon bar code (starts) S1
GB bar code (starts) SN
Oregon bar code (ends) D025
Stihl bar code (starts) 3003
Sugihara bar code (starts) ST2
HUSQVARNA [Fits with the GB912 adaptor]
61, 64, 65, 66, 70, 77, 160, 162, 163, 180, 181, 185, 260, 263, 266, 268, 272, 280, 281, 285, 288, 298, 365, 365XP, 371, 372XP, 380, 385XP, 390XP, 394XP, 395XP, 562XP, 575XP, 576XP, 585, 592XP
Cannon (starts) H1
GB (starts) HV
Husqvarna (starts) 585-950
Oregon (ends) D009
Sugihara (starts VT2 or VT3)
Check the Chart Above for Fitment
Husqvarna users will require a GB912 adapter for this bar. A GB lo pro drive rim must be fitted, even if your existing sprocket is 3/8" lo pro. A 3/8" lo pro drive sprocket is not the same as a standard 3/8" drive sprocket.
Proper Setup and Use
Ensure your bar and chain are properly installed and run-in before use. Refer to the picture above for detailed instructions. Avoid shortcuts—proper setup extends the lifespan of your new bar.
GB Extra Thin Bar Compatibility
This bar is specifically designed for use with the Stihl 3614-63PMX chain and Panther 3/8" lo pro ripping chains. When entering the world of chainsaw milling, the term ripping chain can be confusing due to conflicting information online. In reality, a ripping chain is simply a micro or semi-chisel chain filed at a 10-degree angle instead of the usual 30 degrees. Some users may opt for a 5-degree or 15-degree angle—the steeper the angle, the more aggressive the cut but with a rougher finish; the shallower the angle, the smoother the board but with a less aggressive cut.
Getting Started with Chainsaw Milling
Before you begin, we strongly recommend reading our Basic FAQ Milling Guide. Reading this will save time and effort in the long run.
Choosing the Right Chain for Ripping Timber
Using a full chisel chain for ripping timber can cause excessive vibration unless the wood is extremely soft (e.g., redwood). Manufacturers generally agree that ripping chains should be converted from micro or semi-chisel chains. If you plan to modify an existing chain, avoid using a chisel-style chain—simply adjust the angle to 10 degrees for effective ripping.
Understanding Lo Pro Ripping Chains
The topic of Lo Pro ripping chains can be overwhelming, but the information below will help you make an informed decision before purchasing.
Stihl 3614-PMX
- Cuts smoothly out of the box, producing even, high-quality boards.
- Developed in collaboration with Logosol and Stihl, making it the preferred choice for oversized milling setups.
Manufacturer’s Description:
“Special Picco longitudinal saw chain with narrow kerf and high cutting performance, designed for use with longitudinal cutting devices and mobile small sawmills such as Logosol. This semi-circular toothed chain is characterized by low vibration levels and smooth cutting behavior.”
Oregon 91R
- Best suited for smaller milling rigs (25"/61cm and under).
- Has higher depth gauges, resulting in a less aggressive bite compared to the Stihl PMX chain.
Manufacturer’s Description:
“Oregon 91R Low Profile Ripping Chains are specifically designed for portable chainsaw mills and applications where cutting with the grain is required. The only difference from standard chains is the cutter grinding angle.”
Granberg 3/8 Lo Pro
- Adapted ripping chain that performs well, but some cutter modifications may be crude, making sharpening more challenging.
Manufacturer’s Description:
“Adapted scoring and clearing cutters enable a faster cut while maintaining a smooth cutting face and milling action.” Keep in mind, no chain will completely resolve slow milling issues—it is simply a modified semi-chisel chain.
Panther 3/8 Lo Pro
- A new contender in the market, featuring a semi-chisel cutter for smooth and efficient cutting.
- Offers excellent durability and stay-sharp properties.
- A skip-link version (ideal for bars 30" and longer) is in development—stay tuned!
Pros and Cons of Lo Pro Ripping Chains
Pros:
? Narrower kerf (approximately 15% less than a standard 3/8 chain)
? Frequently used in chainsaw mills for optimal performance
? Reduces strain on the powerhead
? Increases milling speed by approximately 20%
Cons:
? Increased chain stretch (even with Stihl PMX)
? Higher cost compared to standard chains
? Lower strength than standard 3/8 or .404 chains—greater risk of breakage if hitting hard materials
? Requires careful handling—less margin for sharpening and milling errors
? Shorter stay-sharp duration compared to larger chains, which can withstand more wear and tear
By selecting the right ripping chain and following proper setup guidelines, you can optimize your chainsaw milling experience for smoother cuts, increased efficiency, and prolonged equipment lifespan.
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