Mooney Viscometer | 275-AM-4
Mooney Viscometer | 275-AM-4
ISO 289, ASTM D1646 (AM-4 only. No related standards for RLM-4)
The Mooney Viscometer measures Mooney viscosity and Mooney scorch of un-vulcanized rubber according to ISO 289.
| Accuracy & Calibration Management
● Temperature accuracy is ±0.3°C compensation with each error compensation function. ● Temperature sensor error, temperature amplifier error, etc. can be easily corrected on the LCD touch screen. ● Mooney values can be automatically calibrated with a built-in weight.
Improved functionality & operability ● You can register test conditions and pass/fail criteria.
Safety ● Equipped with overload and overheat protection devices. ● When the windshield cover is closed, the hot plate is lowered and the test starts, ensuring temperature stability and safety.
Economy ● One PC (optional) can process data from multiple testers (Mooney Viscometer and MDR). |
| ISO 289-1 to 4 | • Rubber, unvulcanized — Determinations using a shearing-disc viscometer — Part 1: Determination of Mooney viscosity
• Rubber, unvulcanized — Determinations using a shearing-disc viscometer — Part 2: Determination of pre-vulcanization characteristics • Rubber, unvulcanized — Determinations using a shearing-disc viscometer — Part 3: Determination of the Delta Mooney value for non-pigmented, oil-extended emulsion-polymerized SBR • Rubber, unvulcanized — Determinations using a shearing-disc viscometer — Part 4: Determination of the Mooney stress-relaxation rate |
| ASTM D1646 | Standard Test Methods for Rubber—Viscosity, Stress Relaxation, and Pre-Vulcanization Characteristics (Mooney Viscometer) |
Note: Rotorless Mooney Viscometer, RLM-4 does not conform to above testing standards.

| Model | AM-4 |
| Die configuration | • V-groove (Standard)
• Square groove (Option) |
| Mooney viscosity | 200M max. |
| Test temperature | 200°C max. |
| Rotor speed | 2±0.02rpm |
| Power supply | Single-phase, AC200 to 230V, 50/60Hz, 2.4kVA (or specify) |
| Compressed air | 0.4 to 0.6MPa |
| Dimensions | W430 × D600 × H1190 mm |
| Weight (approx.) | 155 kg |
Options
| PC and testing software | CON-L |
| Stress relaxation measurement | M-SR2 |
| Rotor preheating option | M-RPH |
| Air filter set | AC-4 |
| Square shape groove die | —– |
Spare parts
| L rotor | 2110059 |
| S rotor | 2110058 |
| Rubber bushing | 4102550 |
| Pt 100 resistance thermometer for control | 8120008 / 8120012 |
| Needle roller bearing | —– |
| Main PCB | —– |
| CPU board | —– |
| 24V power supply | —– |
| 5-15 power supply | —– |
| Touch screen | —– |
| Safety door switch | —– |
| Die stop switch | —– |
| Load cell (with rubber mount) | —– |
| Hanging wire for internal weight | —– |
| Vertical shaft | —– |
| Heater (mica ring heater, 530W) | —– |
| K thermocouple for overheat protection | —– |
Rotorless Mooney Viscometer | 274-RLM-4

The Rotorless Mooney Viscometer model RLM-4 conducts Mooney viscosity test and Mooney Scorch
test. In order to eliminate the problem of frictional resistance of rotor of conventional Mooney
Viscometer, this model employs a rotorless mechanism.
| Model | RLM-4 |
| Related standard | N/A (Toyoseiki original design) |
| Sample chamber die | Rotorless (contactless, sealed type) |
| Mooney viscosity | 200M max. |
| Test temperature | 200°C max. |
| Rotation | 2rpm |
| Power supply | Single-phase, AC200V, 50/60Hz, 2.4kVA (or specify) |
| Compressed air | 0.45MPa |
| Dimensions | W430 × D600 × H1190mm |
| Weight (approx.) | 160kg |
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