Graco 121683 3-Meter M8 4-Pin MF Molded Cable
This Graco 121683 molded M8 cable provides a reliable, **plug-and-play** connection between your pump and control unit in high-performance, industrial airless sprayer systems. With a 3-meter length, abrasion-resistant polyurethane jacket, and rigid overmold, it’s built for demanding environments.
Key Features
- 3 m molded cable with M8 4-pin male/female interface
- Overmolded strain relief to protect against flex fatigue
- Robust jacket resists kinking, chemicals, and abrasion
- Shielded conductors help reduce EMI and preserve signal integrity
- Wide temperature range (–40 °C to +85 °C) for rugged applications :contentReference[oaicite:1]{index=1}
Technical Specifications
| Part Number |
121683 |
| Connector Type |
M8, 4-Pin Male ↔ Female |
| Length |
3 m (9.8 ft) :contentReference[oaicite:2]{index=2} |
| Weight |
~0.02 lb :contentReference[oaicite:3]{index=3} |
| Jacket |
Polyurethane, abrasion-resistant |
| Temperature Range |
–40 °C to +85 °C :contentReference[oaicite:4]{index=4} |
| IP Rating |
IP67 (sealed against moisture & particulates) :contentReference[oaicite:5]{index=5} |
Compatible Machines
The 121683 cable is typically used with Graco **BLDC motor** (brushless DC) pumps and other systems that require a 4-pin M8 signal harness for feedback or control. Examples include:
- Graco **SaniForce® 1040e** electric-operated diaphragm pump :contentReference[oaicite:6]{index=6}
- Graco **Husky 1050e** electric-operated diaphragm pump :contentReference[oaicite:7]{index=7}
- Graco **XM Plural-Component (PFP)** sprayer systems :contentReference[oaicite:8]{index=8}
- Other Graco BLDC-based flow-meter / sensor feedback systems
Benefits & Use Cases
Using this cable with compatible Graco machines provides:
- Reliable feedback loop between pump and controller for precise metering and diagnostics
- Reduced downtime due to its rugged build and strain-relief design
- Flexibility in rig layout – 3 m length allows freedom in cable routing without tight bends
- Environmental resistance – resilient to moisture, chemicals, and vibration
Installation Tips
- Ensure both connectors are clean and dry before mating.
- Torque the M8 coupling nut as per Graco’s spec to avoid damaging the overmold.
- Avoid routing the cable near high-current power lines to minimize EMI.
- Inspect periodically for abrasion or jacket wear, especially in tight bends.
Frequently Asked Questions
This cable (Graco 121683) links the control electronics to the pump or motor, transmitting signals such as speed feedback, diagnostics, or sensor data. The M8 4-pin connector provides a compact, industrial-grade interface for reliable communication.
It’s compatible with machines that use a 4-pin M8 male/female feedback or signal cable. Confirm by checking your machine’s wiring diagram or service manual — look for references to “121683” or “M8 4-pin feedback harness” in Graco’s parts list.
Shortening the cable is not recommended because of the molded overmold and strain-relief design. If a shorter length is required, it’s best to order a custom-length cable from Graco or an authorized distributor.
Very durable. The outer jacket resists abrasion, and the molded overmold with strain relief protects against flex fatigue. The connector is IP-rated, providing resistance to moisture and particulates.
