Drive Belt Sizes
Machine Belt Sizes
The chart below shows the belts that fit most machines. Pleases note that many of the older drum sanders had several different sizes of pulleys, so the correct belt size for your machine may be different from the ones listed. We recommend measuring your old belt and comparing it to the Belt Size Chart.
For belt dimensions, see the Belt Size Chart
Drum & Belt Sanders
| Machine | Drum Belt | Fan Belt |
|---|---|---|
| American 8 Adjustable | 5L390* | 4L340* |
| American 8 Baldor | 3VX375 | 3L320 |
| American 8 Howell | 5L400* | 4L350* |
| American 8 Motor Kit | 5L400 | 4L340 |
| American 8 Peerless | 5L400* | 4L340* |
| Apollo 8 | 3VX375 | 3L270 |
| Bona Belt | PV328J7 or PV340J61 | PV250J5 or PV260J5 |
| Bona Super 8 | 3VX390 or 3VX400 | 3VX300 |
| Clarke 504 | 5L390* or BX36* | 4L330* |
| Clarke/Portercable CF12 | BX40* | 4L340* |
| Clarke/Portercable F89 | B36* | 4L310* |
| Classic 8" Narrow | 3VX425 | 3L300 |
| Classic 8" Wide | B38 | 4L300 |
| Cobra II |
PV506J6 Or PV470J64 | N/A |
| Floorcrafter | 3VX375 | 3L280 |
| Galaxy 2000 & Omega | PV380J8 or PV390J82 | PV360J5 |
| Hummel | HS186 | HS187 |
| KT Taurus & NT8 | BX37 or BX363 | 3L280 |
| Legend | PV365K6 | PV280J6 |
| Orebro 10 | AX32 | 3VX265 |
| Silverline Pro 8 | SS131 | SS132A (Idler 3VX250) |
| Standard 8 | 4L400 or 4L410 | 4L370 or 4L360 |
1. PV328J7 fits serial number up to and including BB0623; PV340J6 fits serial number BB0624 and above.
2. PV380J8 fits most machines, but will be too tight on some older machines.
3. BX37 fits most machines, some very old machines take BX36.
4. PV506J6 (PJ1285) fits machines made before 2015 (2 idler pulleys); PV470J6 (PJ1194) fits machines made after 2015 (1 idler pulley)
Edgers
Some extension edgers have different length noses, each taking a different belt. See the parts diagram for the correct belt.
| Edger | Belt |
|---|---|
| Bona Edge (Pre-2006)* |
JBV101 |
| Bona Edge |
JBE101 |
| Bona Edge XL |
JBV101 |
| Bona Mini Edge |
JBM101 |
| Bona Viking |
JBV101 |
| Clarke CE7 | CP18 |
| Clarke SE7 | CP19 |
| Clarke Super E | See Parts Diagram |
| DRE10 Radiator Edger | 3L250 |
| DRE13 Radiator Edger | 3L310 |
| Galaxy Elite | GE10 |
| Harvester Radiator Edger | 3VX315 |
| IOB 10" Radiator Edger | 4L270 |
| IOB 13" Radiator Edger | 3L320 |
| KT Vega | VE10 |
| Lagler Elan | See Parts Diagram |
| Lagler Flip | See Parts Diagram |
| Lagler Unico | See Parts Diagram |
* The Pre-2006 model has the light on the outside, the newer models have the light built in.
1. Bona edgers may have longer or shorter noses, which take different size belts. Always measure your old belt. See Measuring Belts
Other Machines
| Machine | Belt |
|---|---|
| Trio Fan |
FE61 |
| Trio Drive |
LT949 |
Belt Dimensions
Belts are measured by the outer circle (see image below). See the charts below for the belt dimensions.
For a list of which belts fit each machine, see the Machine Belt List.
3L, 4L & 5L Series Belts
| Number | Outer Circle | Number | Outer Circle | Number | Outer Circle |
|---|---|---|---|---|---|
| 3L180 | 18" | 4L250 | 25" | 5L250 | 25" |
| 3L190 | 19" | 4L260 | 26" | 5L260 | 26" |
| 3L200 | 20" | 4L270 | 27" | 5L270 | 27" |
| 3L210 | 21" | 4L280 | 28" | 5L280 | 28" |
| 3L220 | 22" | 4L290 | 29" | 5L290 | 29" |
| 3L230 | 23" | 4L300 | 30" | 5L300 | 30" |
| 3L240 | 24" | 4L310 | 31" | 5L310 | 31" |
| 3L250 | 25" | 4L320 | 32" | 5L320 | 32" |
| 3L260 | 26" | 4L330 | 33" | 5L330 | 33" |
| 3L270 | 27" | 4L340 | 34" | 5L340 | 34" |
| 3L280 | 28" | 4L350 | 35" | 5L350 | 35" |
| 3L290 | 29" | 4L360 | 36" | 5L360 | 36" |
| 3L300 | 30" | 4L370 | 37" | 5L370 | 37" |
| 3L310 | 31" | 4L380 | 38" | 5L380 | 38" |
| 3L320 | 32" | 4L390 | 39" | 5L390 | 39" |
| 3L330 | 33" | 4L400 | 40" | 5L400 | 40" |
| 3L340 | 34" | 4L410 | 41" | 5L410 | 41" |
| 3L350 | 35" | 4L420 | 42" | 5L420 | 42" |
| 3L360 | 36" | 4L430 | 43" | 5L430 | 43" |
| 3L370 | 37" | 4L440 | 44" | 5L440 | 44" |
| 3L380 | 38" | 4L450 | 45" | 5L450 | 45" |
| 3L390 | 39" | 4L460 | 46" | 5L460 | 46" |
| 3L400 | 40" | 4L470 | 47" | 5L470 | 47" |
A, AX, B & BX Series Belts
The only difference between B and BX belts is the BX is cogged to make it more flexible.
| Number | Outer Circle | Number | Outer Circle |
|---|---|---|---|
| A32 & AX32 |
34" |
B39 & BX39 |
42" |
| B32 & BX32 | 35" | B40 & BX40 | 43" |
| B33 & BX33 | 36" | B41 & BX41 | 44" |
| B34 & BX34 | 37" | B42 & BX42 | 45" |
| B35 & BX35 | 38" | B43 & BX43 | 46" |
| B36 & BX36 | 39" | B44 & BX44 | 47" |
| B37 & BX37 | 40" | B45 & BX45 | 48" |
| B38 & BX38 | 41" | B46 & BX46 | 49" |
3VX Series Belts
| Number | Outer Circle | Number | Outer Circle |
|---|---|---|---|
| 3VX250 |
25" |
3VX385 |
38.5" |
| 3VX265 | 26.5" | 3VX390 | 39" |
| 3VX300 | 30" | 3VX400 | 40" |
| 3VX315 | 31.5" | 3VX410 | 41" |
| 3VX355 | 35.5" | 3VX425 | 42.5" |
| 3VX375 | 37.5" | 3VX475 | 47.5" |
Poly V Type Belts
Poly V belts are measured by the diameter and the number of ribs.
The number of ribs is the number after the letter J.
For example, a PV390J8 has 8 ribs.
The size dimension is the same for all widths.
| Ribs | Width |
|---|---|
| 4 | .368" |
| 5 | .460" |
| 6 | .552" |
| 7 | .644" |
| 8 | .736" |
| 10 | .920" |
| Number | Outer Circle | Number | Outer Circle |
|---|---|---|---|
| PV240J | 24.5" | PV360J | 36.5" |
| PV250J | 25.5" | PV370J | 37.5" |
| PV260J | 26.5" | PV380J | 38.5" |
| PV270J | 27.5" | PV390J | 39.5" |
| PV280J | 28.5" | PV400J | 40.5" |
| PV290J | 29.5" | PV410J | 41.5" |
| PV300J | 30.5" | PV420J | 42.5" |
| PV310J | 31.5" | PV430J | 43.5" |
| PV320J | 32.5" | PV440J | 44.5" |
| PV330J | 33.5" | PV450J | 45.5" |
| PV340J | 34.5" | PV460J | 46.5" |
| PV350J | 35.5" | PV470J | 47.5" |
Bona Edger Belts
Bona edgers (excluding the Advantedge) use a T5 series cog belt. These belts come in 4 different lengths, depending on the edger model and nose length. Because the edger models look so similar it is difficult to determine what belt is needed. We recommend measuring the belt length or counting the number of teeth. If your belt is still in good condition you may be able to read the numbers - the belt size will begin with T5-, followed by the length in millimeters. For example, the JBE10 belt will be T5-545.
| Part # | Length (mm) | Length (Inches) | Number of teeth |
|---|---|---|---|
| JBM10 | 455mm | 17-7/8" | 91 |
| JBE10 | 545mm | 21-7/16" | 109 |
| JBV10 | 690mm | 27-3/16" | 138 |
| JBV11 | 900mm | 35-7/16" | 180 |
Measuring Belts
If you have an older machine, you may need to measure the belt to match it up. If you do not have a belt, or your belt is broken, you will need to measure around the pulleys.
Measuring your old belt
Most belts are measured by the outer diameter, or outer circle. This is the length around the outside of the belt.
If you have a flexible tape measure (typically used for measuring fabric, these can be found in sewing stores) you can wrap it around the outside of the belt.
This will give you the outer diameter of the belt, which can be compared to the charts above.
Another method is to place a mark on the belt and a mark on a board. Line up these marks, then roll the outside of the belt along the board until the belt mark
cones around and contacts the board. Place a second mark on the board that lines up with the belt mark. Now measure the distance between the 2 marks on the board.
This will give you the outer diameter.
Measuring without a belt
If you do not have a belt to measure, you will need to measure around the belt pulleys.
Always measure around the outside of the pulley, not the groove where the belt rides.
For V belts, this will be the correct diameter.
For Poly V and cog belts, this will be the inside diameter, which is about 1/2" shorter than the outside diameter.
You will need to add about 1/2" to the measured dimension.
The measurement can be done either with a flexible tape measure, or with a string.
When using a string, wrap the string around the pulleys and place a mark where it meets.
Lay the string out straight and measure it.