Notice regarding changes to model numbers for Timing Pulleys Products Information
We will be changing the model numbers of Timing Pulleys on April 1, 2017.
- Affected models
1. Details of change
- Material notation
- Clarified steel and aluminum. Aluminum shown as [Code: A]. Steel [Code: S] has been abolished.
- Cylindrical Pulleys
- Cylindrical Pulleys
- Fit Bore Easy Finished Bore Type
- We have expanded variations of shaft bore chamfer, keyway size, and tap size. The available range has been greatly expanded.
2. Examples of model number changes
Standard Stock Pulleys model numbers
Previously the presence or absence of the material code differed depending on the size. From now on, we will unify the classification of steel and aluminum for all pulleys to be clear.
Comparison of old model numbers and new model numbers
An example in which the base pulley is aluminum but there is no code A given. Here, A will be given.
- Old model numbers: PT30P2M6DF
- ↓
- New model numbers: PT30P2M6DF-A
An example in which the base pulley is steel and code S is given. Here, there will be no code.
- Old model numbers: PT30P3M10BF-S
- ↓
- New model numbers: PT30P3M10BF
[In the case of PX belt tooth profiles]
| PT | 20 | P2M6 | DF | - | A |
| (1) Timing Pulley | (2) Number of teeth | (3) Belt models | (4) Pulley series | (5) Material |
[Belt models]: PX Belts, HY Type Ultra PX Belts, Water Proof Type Ultra PX Belts (W), HC Type Ultra PX Belts, Oil Proof Type Ultra PX Belts (HA)
*For P14M-HY series belt use, please write [- HY] at the end to denote it is a specialized pulley.
[In the case of Trapezoidal Belts]
| PT | 20 | MXL6.4 | DF | - | A |
| (1) Timing Pulley | (2) Number of teeth | (3) Belt models | (4) Pulley series | (5) Material |
[Belt models] : MXL, XL, L, H, XH, XXH
[In the case of Urethane Belts]
| PT | 20 | T5-10 | BF | - | A |
| (1) Timing Pulley | (2) Number of teeth | (3) Belt models | (4) Pulley series | (5) Material |
[Belt models]: T = T tooth profile, AT = AT tooth profile, RPP = RPP tooth profile
Cylindrical Pulley model numbers
Since the base pulley material is aluminum, the material is shown with the code [-A]. In addition, although the flange set sales code [-S] previously meant that steel was used, set sales are now standard so this code has been abolished.
Comparison of old model numbers and new model numbers
Denoting base pulley material code and abolition of flange set sales code
- Old model numbers: PT30P3M-100L-S
- ↓
- New model numbers: PT30P3M-100L-A
[In the case of PX belt tooth profiles]
| PT | 20 | P | 2M | - | 100L | - | A |
| Pulley | Number of teeth | Belt models: PX | Pitch: 2M, 3M, 5M | Cylindrical Pulley | Material: Aluminum |
[In the case of Trapezoidal Belts]
| PT | 20 | MXL | - | 100L | - | A |
| Pulley | Number of teeth | Type: MXL, XL | Cylindrical Pulley | Material: Aluminum |
[In the case of Urethane Belts]
| PT | 20 | T | 5 | - | 100L | - | A |
| Pulley | Number of teeth | Type: T tooth profile | Pitch | Cylindrical Pulley | Material: Aluminum |
Lock Pulley model numbers
The plated series omitted the S type sleeve frame number, but with the model number change we will denote the frame number.
Comparison of old model numbers and new model numbers
Sleeve frame number will not be omitted, and instead the frame number will be given.
- Old model numbers: PT40P5M25AF-F318-K
- ↓
- New model numbers: PT40P5M25AF-FS2318-K
| PT40P5M25AF | - | F | S2 | 3 | 18 | - | K |
| Base sprocket model number | Sleeve mounting type | Sleeve frame number | Number of locking bolts | Shaft bore diameter: mm | Surface treatment | ||
| PT30P2M6BF-A | - | C3 | 10 | ||||
| Base sprocket model number | Sleeve frame number | Shaft bore diameter: mm | |||||
| PT30P5M15BF | - | N2 | 11 | A | |||
| Base sprocket model number | Sleeve frame number | Shaft bore diameter: mm | Sleeve mounting type |
Timing Pulley Fit Bore Easy Finished Bore Type model numbers
We have expanded variations of shaft bore chamfer, keyway size, and tap size.
- Yellow highlighted areas are expanded models.
- Fit Bore Finished Bore Type model numbers will not change.
| PT30P8M40BF | - | H | 030 | N | - | J | 08 | D2 | M06 | - | K |
| Base sprocket model number | Bore tolerance | Shaft bore diameter: mm | Chamfer code | Keyway width tolerances and grades | Keyway width | Number of taps and position | Tap sizes | Surface treatment |
Bore tolerance
- G: G7
- H: H7
- M: M7
- *Grade 7 only
Shaft bore diameter
- Set for each size
- Specify with three integers
- (Plain bore diameter + 1 mm round-up integer-maximum bore diameter)
Chamfer code
-
- N: C0.5
- A: C1
- B: C2
- C: C3
-
Shaft bore diameter Chamfer amount 10～17 N A - - 18～44 N A B - 45～80 N A B C
Keyway width tolerances and grades
- J: Js9
- F: F7
- P: P9
- E: E9
- W: Without keyway
Keyway width
- Specify with two integers (JIS standard)
- *Without keyway: W00
- *Keyway size can only be selected with Js9 and P9 (new JIS). Users can select duplicate min/max keyway sizes for applicable bore diameter ranges
Number of taps and position
- D0
- D1
- D2
- D3
- D4
- D5
Tap sizes
- Specify with two integers (standard sizes) *Comes with set screws
- *Without taps: D0M00. *Select upper and lower standard sizes. It should be greater than M4, and within the keyway width (see the following for more details)
-
[In the case of Js9・P9]
Applicable Shaft bore diameter mm Keyway width mm Standard size Selectable size 10～12 4 M4 － 12～17 5 M5 M4 17～22 6 M6 M5 22～30 8 M6 M5, M8 30～38 10 M8 M6, M10 38～44 12 M8 M6, M10 44～50 14 M8 M6, M10 50～58 16 M10 M8, M12 58～65 18 M10 M8, M12 65～75 20 M12 M10, M16 75～80 22 M12 M10, M16 [In the case of F7・E9]
Applicable Shaft bore diameter mm Keyway width mm Standard size Selectable size 10～13 4 M4 － 14～20 5 M5 M4 21～30 7 M6 M5 31～40 10 M8 M6, M10 41～50 12 M8 M6, M10 51～60 15 M8 ※ M6, M10 61～70 18 M10 M8, M12 71～80 20 M12 M10, M16 Conventionally it is M10 but it will be changed to M8.
Surface treatment
- K: Electroless nickel phosphorus plating
