PMB33E-20201-03

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The PMB33E-20201-03 is a motor with an angular contact ball bearing and a light preload class. Manufactured by Pacific Scientific as part of the PMB Brushless Servomotors series, it is built with high-strength cast iron housing. It supports a 20 mm shaft diameter and weighs 1.3 kg.

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Product Description:

The PMB33E-20201-03 originates from Pacific Scientific under PMB Brushless Servomotors line. This fixed side mounting method guarantees unwavering alignment under axial loads which maintains positional accuracy. Its compatibility with a 20 mm shaft diameter offers broad integration potential for standard machine tool spindles which simplifies machine builders’ component selection.

An angular contact ball bearing serves as the core bearing type. This provides superior rigidity under combined radial and axial loads which enhance rotational precision. Constructed from bearing steel, the unit delivers hardened resistance to fatigue stresses which prolongs service intervals. Encased in a high strength cast iron housing, the support module withstands heavy machining forces and protects internal components. The black oxide surface treatment safeguards against corrosion and maintains consistent performance in humid environments. A light preload class balances internal clearance and that minimizes friction without sacrificing rigidity. The motor’s 60 mm bolt hole pitch aligns with common mounting patterns for accelerating installation process. A 65 mm overall width ensures compact integration which conserves machine footprint.

The PMB33E-20201-03 variant lists an overall height of 55 mm, managing tight vertical spaces without compromising load capacity. Its mounting hole diameters of 9 mm match standard fastener dimension. At 1.3 kg weight, the gadget offers light handling while adjusting necessary mass for vibration damping. It draws a continuous stall current of 7.4 A for dependable torque delivery. Also, the module’s operating voltage spans 18-74 V DC for flexible drive compatibility. Continuous torque of 4.4 Nm supports steady-state load handling on order to maintain positional stability. Having a peak torque rating of 5.4 Nm over brief intervals, it supplies extra force during acceleration phases and hence improves dynamic response.

Applicable Shaft Diameter
20 mm
Bearing Type
Angular Contact Ball Bearing
Bolt Hole Pitch
60 mm
Housing Material
High Strength Cast Iron
Material
Bearing Steel
Mounting Hole Diameter
9 mm
Mounting Method
Fixed Side
Overall Height
55 mm
Overall Width
65 mm
Preload Class
Light Preload
Surface Treatment
Black Oxide
Type
Motor
Weight
1.3 kg
  • PMB 33E 20201 03
  • PMB-33E-20201-03
  • PMB33E 20201 03
  • PMB33E-2020l-03
  • PMB33E-2O2O1-O3
  • PMB33E-2O2Ol-O3
  • PMB33E2020103

Frequently Asked Questions about PMB33E-20201-03:

Q: What type of support unit does the PMB33E-20201-03 employ?

A: The PMB33E-20201-03 incorporates a motor design that accommodates axial loads and facilitates precise linear movement control.

Q: What shaft diameter does the PMB33E-20201-03 accommodate?

A: Compatibility with a 20 mm shaft diameter enables seamless integration with standard leadscrews and spindles, allowing machine designers to standardize components and reduce inventory complexity.

Q: What bearing type is used in the PMB33E-20201-03 module?

A: An angular contact ball bearing manages combined radial and axial loads effectively, providing high stiffness that sustains precise rotational positioning even under heavy machining forces.

Q: What material forms the core bearing in the PMB33E-20201-03 unit?

A: Bearing steel construction of this motor provides superior strength and fatigue resistance, ensuring the bearing maintains its load-carrying capability over prolonged duty cycles without premature wear.

Q: What housing material encloses the PMB33E-20201-03 assembly?

A: Its high strength cast iron housing surrounds the bearing assembly to resist deformation under heavy loads. This contributes to the unit’s overall rigidity and structural integrity in demanding applications.


Internal Product Review

  • ‘‘The PMB33E-20201-03 excels through its 20 mm shaft compatibility and robust black oxide finish, quietly delivering reliable support under demanding loads. Its precision assembly fosters stable, vibration-damped operation and consistent performance longevity, reflecting Pacific Scientific’s commitment to industrial-grade accuracy and durability.’’

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