Bosch Rexroth 1070089509-GA1 AC Servo Motor

REXROTH 1070089509-GA1 MSK Series Servo Motor – Stop the Clock on Your Downtime

Every minute your line is down, you’re bleeding money. Whether it’s a tripped drive fault, a burned encoder, or a catastrophic motor failure on your CNC or injection press, the REXROTH 1070089509-GA1 is the exact replacement you need — and we have it on the shelf right now in Xiamen, ready to clear customs and land at your dock faster than your maintenance team can finish the incident report.

This is not a listing for a part that “may be available.” This is a confirmed, physically stocked, 100% original Bosch Rexroth MSK Series AC servo motor. We’ve shipped this exact part to plants in Germany, South Korea, Mexico, and the UAE under emergency purchase orders. We know what’s at stake.

URGENT REQUIREMENT? Contact: [email protected] | WhatsApp: +86 18359268345

Quick Technical Datasheet

Troubleshooting & Replacement Tips

After ten years of field work, here’s what actually goes wrong with MSK series motors and what to watch before you bolt in the replacement:

Common Fault Codes Linked to This Motor:

• F8022 / F8025 (Encoder error) – Nine times out of ten this is a damaged feedback cable, not the motor itself. Before condemning the motor, swap the cable first. If the fault clears, you saved yourself a motor swap.
• F8010 (Motor overtemperature) – Check the thermal sensor wiring at the motor connector. Corroded pins on the power connector cause intermittent open-circuit readings that trigger false overtemp faults. Clean the contacts with DeoxIT before assuming the motor is dead.
• E8025 (Commutation error on startup) – This almost always means the motor data set in the drive does not match the physical motor. After installing the 1070089509-GA1, you must load the correct motor data file (MDF) into the IndraDrive. Do not assume the drive will auto-detect.

Replacement Checklist – Do Not Skip These Steps:

• Power down the drive and wait a minimum of 5 minutes for DC bus capacitors to discharge before disconnecting motor cables. Measure with a multimeter — do not trust the drive’s power-off indicator alone.
• Note the motor cable routing and connector orientation before removal. The MSK power connector is keyed but the feedback connector can be forced in the wrong orientation if you’re rushing.
• After mechanical installation, verify shaft coupling alignment to within 0.05 mm TIR. Misalignment on a servo application will destroy the new motor’s bearings within weeks.
• Load the motor data file (MDF) for the 1070089509-GA1 into the IndraDrive via IndraWorks or the drive’s parameter interface. The MDF contains the motor’s electrical constants — without it, the drive will either fault immediately or run the motor with incorrect current limits.
• Perform a commutation offset measurement (C0300 or equivalent) if your drive requires it. Some IndraDrive firmware versions do this automatically on first enable; others require a manual trigger.
• Run the motor uncoupled at low speed (5–10% of rated) for 2–3 minutes and monitor motor temperature and drive current. If current is abnormally high at low speed, recheck the MDF and commutation offset.
• Check encoder cable shielding continuity. A broken shield on the feedback cable is the single most common cause of recurring encoder faults after a motor swap.

Reliability in Harsh Conditions

The MSK series was not designed for a climate-controlled lab. Bosch Rexroth built this motor for the floor — the actual production floor, where coolant mist settles on everything, ambient temperatures swing 30°C between morning startup and afternoon peak load, and the machine frame vibrates at frequencies that loosen every fastener that wasn’t properly torqued.

The IP65 housing keeps cutting fluid and wash-down water out of the stator windings. The Class F insulation gives you a 25°C thermal margin above Class B, which matters when your enclosure cooling fails on a Friday afternoon. The shaft seal is rated for continuous exposure to light oils and coolant mist — not just splash protection.

Vibration resistance is validated to IEC 60068-2-6 (sinusoidal) and IEC 60068-2-64 (random). The encoder is mounted on a separate bearing to isolate it from shaft radial loads, which is why MSK encoders outlast the motors on machines with marginal coupling alignment. The winding impregnation is vacuum-pressure applied, not dip-coated — it fills every void and prevents moisture ingress that causes insulation breakdown in humid foundry and food-processing environments.

We’ve supplied this part to customers running three-shift operations in Malaysian rubber processing plants, Mexican automotive stamping lines, and South Korean semiconductor fabs. The motor performs. The question is whether your replacement arrives before your production schedule collapses.

Global Express Logistics

Our warehouse is in Xiamen, Fujian — one of China’s primary export hubs with direct access to Xiamen Gaoqi International Airport and the Port of Xiamen. This is not a drop-ship operation. The part is physically here.

Standard Emergency Dispatch Process:

• Order confirmed before 14:00 CST: Same-day dispatch via DHL Express or FedEx International Priority.
• Export documentation: Commercial invoice, packing list, and certificate of origin prepared same day. HS code pre-classified for major destination markets to avoid customs delays.
• Typical transit times: Southeast Asia 1–2 days | Europe 3–4 days | North America 3–5 days | Middle East 2–3 days | South America 5–7 days.
• Tracking: AWB number sent via email and WhatsApp within 2 hours of dispatch. We monitor the shipment and flag any customs holds proactively.
• Packaging: Anti-static bag, foam-lined export carton, fragile labeling. The motor arrives in the same condition it left our shelf.

For customers with existing DHL or FedEx accounts, we can ship on your account number to maximize your negotiated rates. For urgent orders where air freight cost is secondary to speed, tell us — we will find the fastest routing available that day.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
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