This gallery contains 6 photos.
This past summer, Dana “Gene” Rosenburg of Choco Fountain came to B&B Manufacturing looking for a timing belt drive system for their extendable chocolate fountains. Choco Fountain has provided their attended fountains for private and corporate events ranging in size … Continue reading
Flange codes are very simple. Instead of breaking down each section, we will explain the part number as a whole:
The initial section of the flange part number will indicate the number of teeth and the pitch of the pulley on which the flange is intended to be used. In our example above, the flange is designed for a 20 tooth, XL pitch pulley.
The last section indicates the material of the flange. In our example above the “FA” indicates “Flange Aluminum”. The same material codes used for pulleys and bar stock are also used for flanges.
Timing pulley bar stock, regardless of pitch, will follow the same part numbering principles as the pulleys that we have already discussed in Class 1 and Class 2. Although there may be some variance based on the system of measurement used, the part numbers will be arranged in the same format.
These part number are comprised of 5 coded sections:
1. (20) 2. (XL) 3. (PS) 4. (8) 5. (S)
1. (40) 2. (T5) 3. (PS) 4. (160) 5. (A)
Can be 1-3 digits in length, and will always be a direct reflection of the number of teeth on the pulley bar stock.
Pitch refers to the distance from the center of a pulley tooth to the center of the next tooth. Codes are the same as their finished pulley counterparts.
MP/MXL = .080″ pitch
LT (40 DP) = .0816″ pitch
XL = .200″ pitch
L = .375″ pitch
H = .500″ pitch
XH = .875″ pitch
2P/2MR = 2mm PowerGrip GT
3P/3MR = 3mm PowerGrip GT
5P/5MR/5MGT = 5mm PowerGrip GT
3M = 3mm HTD
5M = 5mm HTD
8M = 8mm HTD
This code indicates the item is a full bar of toothed pulley stock.
This code will indicate the length of the toothed area of bar stock. This may be in inches or millimeters.
This section of code will indicate the material used to make the bar stock. The codes are identical to the finished pulley codes:
A = Aluminum
S = Steel
Seldom used codes:
P = Plastic
SS = Stainless Steel
When Ron Griswald of BZEB Inc. called B&B, he was looking for a belting solution for his first production run of his new B8Zipr. The B8Zipr is a revolutionary way of Bates labeling documents for production in litigation or any other industry that requires a sequential alpha/numeric identifier to be affixed to documentation for identification. Our customer service team directed him to our timing belt part number 110MXL025G and now BZEB is about to release their first production run. This unusual use of a timing belt is an example showing that our power transmisson products can be used even in sticky situations.
Give us a chance to help you through a sticky situation. Call 877.787.4022
The HTD and PowerGrip GT pitch pulleys are based in the metric system. The tooth profile of these common pulleys is curvilinear, and looks like: 
Standard/Stock Part # Configuration:
15-5M15-6FA3
This part number is comprised of 7 coded sections:
1. (15) 2. (5M) 3. (15) 4. (-) 5. (6F) 6. (A) 7. (3)
1. Number of teeth in the pulley:
Can be 1-3 digits in length, and will always be a direct reflection of the number of teeth on the pulley. Example pulley above would have 20 teeth.
2. Pitch of the pulley:
Pitch refers to the distance from the center of a pulley tooth to the center of the next tooth. Fore these curvilinear pitches, B&B uses an abbreviated code to express the pitch for part numbering purposes. Common pitches, and their codes:
2P/2MR = 2mm PowerGrip GT
3P/3MR = 3mm PowerGrip GT
5P/5MR/5MGT = 5mm PowerGrip GT
3M = 3mm HTD
5M = 5mm HTD
8M = 8mm HTD
3. Belt Width:
This code indicates the width of the toothed section of a timing pulley, and directly corresponds to the width of the belt intended to run on the pulley. When measuring the toothed section of a pulley to determine its code, remember the width of the toothed section will be slightly larger than the belt intended to run on that section.
Common belt width codes for HTD/PGGT pitch pulleys:
06 – 6mm belt
09 – 9mm belt
15 – 15mm belt
20 – 20mm belt
25 – 25mm belt
30 – 30mm belt
4. Inch/Metric Designation
This code component has only two possibilities: “-” or “M”. This code component will clarify our interpretation of the final character in our part number. When the “-” character is used, the final part number section will be interpreted using the inch system of measurement. When the “M” character is used, the final part number section will be interpreted using the metric system. We will go into further detail shortley, when discussing the final coded section.
5. Pulley Appearance
This section of code will help you determine the physical appearance of the pulley, and the components used to assemble the pulley. These codes will be used throughout B&B’s part numbering system.
Standard pulley appearnce codes are:
6F: With hub, with flanges.
6C: Typically for very small pulleys. These pulleys have a flange on one side and a hub that works as a flange on the other side.
6: With hub, no flanges.
6W: Typically for larger pulleys. Pulley has a hub, no flanges, and the body of the pulley has material removed to reduce weight.
3F: Without hub, with flanges.
3: Without hub, without flanges. Rarely used; few standard offerings.
6. Pulley Material:
This section of code indicates the material from which the pulley was made. The vast majority of our standard product line (using this type of part number) will have one of two codes:
A = Aluminum
S = Steel
Seldom used codes:
P = Plastic
I = Cast Iron
SS = Stainless Steel
7. Bore Size:
The final section of code in our part number will indicate the bore size of the pulley. As we noted earlier, the fourth section of code will have relevance in determining how this final section is interpreted. If the fourth section is a “-”, we will use a code to indicate our bore size in inches. If the fourth section is a “M” we will use a code to indicate our bore size in millimeters. The inch codes are incrementally issued based on common bore sizes, from smallest to largest. The metric bores are typically a direct reflection of the bore size in millimeters.
INCH CODES
1 = .125″ = 1/8″
2 = .1875″ = 3/16″
3 = .250″ = 1/4″
4 = .3125″ = 5/16″
5 = .375″ = 3/8″
6 = .500″ = 1/2″
7 = .625″ = 5/8″
8 = .750″ = 3/4″
9 = .875″ = 7/8″
10 = 1.00″ = 1″
METRIC CODES
3 = 3MM
4 = 4MM
5 = 5MM
6 = 6MM
8 = 8MM
10 = 10MM
12 = 12MM
15 = 15MM