Timing Pulleys - MXL Type
Caution
- Please note that the swaged flange options, NFC, RFC, and LFC, are not reflected in the CAD data.
- Please check the content on our website as the PDF does not contain the most up-to-date information.
Product Description
[Material]
· Pulley: Aluminum alloy, S45C equivalent, SUS304
· Flange: Aluminum alloy, SPCC, SUS304
[Surface treatment]
· Clear anodize, black anodize, hard clear anodize (firm hardness 300HV~), electroless nickel plating, black iron oxide coating
[Related Products]
· Timing belt Timing Belt
· Idler Idler with Teeth Center Bearing, Idler with Teeth Both Sides Bearing, Idler - Backside Tensioning Center Bearing, Idler - Backside Tensioning Both Sides Bearing
■MXL
● Pulley Shape
Tooth Profile (ISO Standard Rack Dimensions)
Shape K
Shape A
Shape B
( ): 23 or Less Toothed Pulley
[ ! ]
[ ! ]
Tooth groove dimensions slightly vary according to the number of teeth. (Pitch: 2.032mm)
[ ! ] The tolerance of the tap position dimension from the boss end face and pulley end face is ±0.3.[ ! ] Shaft Bore Specs. H (Round hole), V or F (Stepped Hole), Y (Both Sides Stepped Hole) and WB (Two-stepped Hole) do not have tapped holes.
[ ! ] Unless otherwise specified except for teeth and F dimensions, the dimension tolerance conforms to JIS B 0405 Class m.
● Shaft Bore Specification
Select shaft bore spec mark and each dim. from the table below.
[ ! ] Surface treatment may not be applied to the shaft bores.
H round hole
P Round Hole + Tap
N New JIS Keyway + Tap
C Old JIS Keyway + Tap
[ ! ] For A-Shape pulley, the screw holes
are set at around 120° to keep away
from peaks.
[NG] Not applicable to Shape A
[ ! ] Specify NK10 when selecting the shaft bore dia. 10
and the keyway width 4.0 mm.
[NG] Shape A has keywayed bores only, not tapped holes.
V Stepped Hole
F Stepped Hole
Y Both Ends Stepped Hole
WB Two-stepped hole
[NG] Not applicable to Shape K
[ ! ] Z - d ≥ 2
[ ! ]2.0 ≤ J ≤ W－2.0
[ ! ] Applicable to Shape B only
[ ! ] Z - d ≥ 2
[ ! ]2.0 ≤ J ≤ L－2.0
[ ! ] Applicable to Shape A only
[ ! ]Q (R)－Y ≥ 2
[ ! ]S+T ≤ W－3.0
[ ! ]S (T) ≥ 3.0
[ ! ] Applicable to Shape A only
[ ! ]Q－R ≥ 2
[ ! ]R－WB ≥ 2
[ ! ]S+T ≤ W－3.0
[ ! ]S (T) ≥ 3.0
(Shaft Bore Specs.: P, N, C)
| dH7 Shaft Bore I.D. | M (Coarse) | Accessory Set Screws |
| 3 to 5 | M3 | M3 × 3 |
| 6 to 18 | M4 | M4 × 3 |
| 19 to 22 | M5 | M5 × 4 |
■Belt Nominal Width / Dimensions
| mm | Nominal | ||||
| MXL013 | MXL019 | MXL025 | MXL037 | MXL050 | |
| A | 4.5 | 6.0 | 7.5 | 11.0 | 14.0 |
| W | 8.5 | 10.0 | 11.5 | 15.0 | 18.0 |
| L | 14.0 | 16.5 | 18.0 | 22.0 | 25.0 |
| Type | Belt Width | [M] Material | [S] Surface Treatment | [A] Accessory Set Screws | |||||
| 3.2 mm (1/8 in) | 4.8 mm (3/16 in) | 6.4 mm (1/4 in) | 9.5 mm (3/8 in) | 12.7 mm (1/2 in) | Pulley | Flange | |||
| MXL013 | MXL019 | MXL025 | MXL037 | MXL050 | |||||
| ATP | ● | ● | ● | ● | ● | Aluminum alloy | Aluminum alloy | Clear Anodize | SUS304 |
| BTP | ● | ● | ● | ● | ● | Black Anodize | |||
| KTP | ● | ● | ● | ● | ● | Hard Clear Anodize | |||
| NTP | ● | ● | ● | ● | ● | Electroless nickel plating | |||
| MTP | - | - | ● | ● | - | S45C Equivalent | SPCC | — | SCM435 (Black Oxide) |
| MTPB | - | - | ● | ● | - | Black Oxide Coating | |||
| MTPP | - | - | ● | ● | - | Electroless nickel plating | |||
| STP | ● | ● | ● | ● | ● | SUS304 | SUS304 | — | SUS304 |
[ ! ] Due to vibrations during transportation, the set screw may become detached from the main body.