ManufacturerMiki Pulley
ALS-055-R
Miki Pulley Starflex jaw coupling with R element (97 JIS A polyurethane, tight-fit construction).
Starflex ALS-R
ALS-055-R
Jaw coupling with polyurethane elastomer R element (97 JIS A, tight-fit / pre-compressed element).
Qualifications
Engineering qualifications
- Negative-direction axial displacement is not allowed.
- Maximum rotation speed does not account for dynamic balance.
- Stiffness values are measured at 20 deg C.
- Inertia and mass are measured at maximum bore diameter.
- Numeric bore entries are standard supported bore diameters restricted in rated transmission torque by shaft-connection holding power.
- Bores between minimum and maximum shown in the dimensions table may be compatible; unlisted bore arrangements require manufacturer consultation.
- Recommended paired-shaft tolerance is h7, with documented special tolerance for bore 35 mm where applicable.
- B = clamp type hub; R = element hardness 97 JIS A tight-fit type.
Performance specifications
| Parameter | Value |
|---|---|
| Parallel misalignment | 0.10 mm |
| Angular misalignment | 1 deg |
| Axial displacement | 0 to +1.4 mm |
| Maximum rotation speed | 7000 min-1 |
| Static torsional stiffness | 2000 N m/rad |
| Radial stiffness | 1350 N/mm |
| Moment of inertia (max bore) | 0.000163 kg m2 |
| Mass (max bore) | 0.34 kg |
Dimensions (mm)
| Value | Dimension |
|---|---|
| 10-28 | d1/d2 bore range |
| 55 mm | D |
| 55 mm | DB |
| 78 mm | L |
| 30 mm | L1/L2 |
| 18 mm | E |
| 2 mm | S |
| 10.5 mm | B |
| 20 mm | G |
| 1-M6 | M |
| 14 N m | Tightening torque |
Standard bore diameters and rated transmission torque
| Bore (mm) | Rated transmission torque (N m) |
|---|---|
| 10 | 21 |
| 12 | 25 |
| 14 | 28 |
| 15 | 35 |
| 16 | 38 |
| 18 | 41 |
| 20 | 48 |
| 22 | 51 |
| 24 | 54 |
| 25 | 61 |
| 28 | 67 |
| 30 | 71 |
| 32 | 80 |
Common questions
Standard bore diameters and rated transmission torque are listed in the bore table below. Bore range: 10-28 mm.
Share shaft bore, speed and torque duty through our engineering enquiry channel.
Engineering quotation
Golden Bearing Company is an authorised Miki Pulley distributor. Share application data for series recommendation and quotation review.
Send Miki Pulley model designation, shaft bore, torque duty and speed for catalogue review.
Request an Engineering Quote
Share shaft bore, speed, torque duty and ordering designation for ALS-055-R. Golden Bearing Company is an authorised distributor for Miki Pulley couplings and shaft locking devices.