Pacific Scientific 33VM52-000-29 LDA-196-1000CE | Servo Replacement

Description

• Model: 33VM52-000-29
• Brand: Pacific Scientific Motion Control
• Part Type: Low-Inertia PMDC Servo Motor / Motor-Encoder Assembly
• Supply: 24 VDC
• Rated Current: 6.4 A
• Torque Constant: 5.9 oz-in/A
• Status: Discontinued / legacy spare; availability is generally limited to existing stock.

Technical Introduction

The Pacific Scientific 33VM52-000-29 is a low-inertia permanent-magnet DC servomotor intended for dynamic industrial motion applications.

Available component references identify the model as a 24 VDC PMDC servo motor, with a 6.4 A rated current, 5.9 oz-in/A torque constant, 0.85 Ω terminal resistance, and approximately 0.00043 oz-in-sec² rotor inertia. The supplied designation also includes LDA-196-1000CE; aftermarket listings associate this with the encoder-equipped motor assembly, although the exact OEM encoder electrical interface and mechanical specifications should be confirmed from the original assembly label before replacement.

Best Suited For

• Replacement of Pacific Scientific low-inertia servo motors
• Legacy CNC, EDM, machine-tool, and automation axes
• Maintenance inventory for machines using 24 VDC PMDC motion systems

Core Technical Specifications

The 6.4 A / 24 VDC / 5.9 oz-in/A / 0.85 Ω motor parameters are supported by multiple available part references. Public sources disagree on some secondary specifications, so encoder output, resolution, shaft dimensions, and detailed environmental ratings should not be inferred without checking the physical unit or OEM documentation.

Pacific Scientific 33VM52-000-29 LDA-196-1000CE

Field Engineer’s Tech Notes

1. Verify the motor and encoder as one assembly.
The supplied part number is commonly listed as a 33VM52-000-29 servo motor, while LDA-196-1000CE is associated in aftermarket listings with the encoder/motor assembly. Confirm the exact nameplate markings, connector arrangement, and feedback device before treating another 33VM52 variant as a direct replacement.

2. Check the DC drive amplifier before energizing.
The motor’s 24 VDC / 6.4 A rating and 0.85 Ω terminal resistance need to be matched with the servo amplifier’s output capability and current limits. Also inspect the mechanical axis for binding; a low-inertia motor subjected to excessive mechanical load can draw abnormal current and overheat even when the electrical installation appears correct.

Adaptive QA & Testing Protocol

Incoming inspection should verify the complete 33VM52-000-29 / LDA-196-1000CE markings, housing condition, shaft and bearing condition, connector integrity, encoder mounting, and signs of impact, contamination, or overheating.

For the motor, testing should include winding resistance comparison and controlled low-voltage rotation where the approved test setup permits it. The measured resistance should be compared against the expected 0.85 Ω nominal terminal resistance, with allowance for measurement method and temperature.

For the encoder-equipped assembly, verify feedback signal generation with the appropriate interface tester or motor test stand. Do not assume a generic 5 V TTL, RS-422, or HTL interface from the LDA designation alone; confirm the actual encoder wiring and output specification from the installed unit.

Inspection photographs, test reports, motor test results, and available test videos can be provided upon request.

Pacific Scientific 33VM52-000-29 LDA-196-1000CE

Buyer’s FAQ

What is Pacific Scientific 33VM52-000-29?

It is a low-inertia permanent-magnet DC servomotor from Pacific Scientific Motion Control. Available references specify 24 VDC, 6.4 A, 5.9 oz-in/A torque constant, and 0.85 Ω terminal resistance.

What does LDA-196-1000CE refer to?

Available aftermarket listings associate LDA-196-1000CE with the encoder-equipped version or motor/encoder assembly. Because public sources do not provide sufficiently consistent OEM data for the encoder itself, the physical nameplate and connector configuration should be checked before ordering.

Is the 33VM52-000-29 still manufactured?

Available supplier references identify this model as discontinued, with remaining supply generally coming from existing or aftermarket inventory.

What condition and warranty are available?

Depending on current stock, the unit may be available as New Surplus (NSFP), used/tested, or refurbished. Request the exact condition, encoder status, test scope, warranty period, and shipping lead time before placing the PO.