AX21 Drive Belt for SL-90DC PRO and SW-375DC PRO Operators

The Allomatic 4L230 drive belt, also searched as 4L-230 and cross-referenced as AX21, is a genuine OEM replacement belt for compatible Allomatic gate operators. This belt is used with the Allomatic SL-90DC PRO slide gate operator and SW-375DC PRO swing gate operator, helping transfer motor power through the operator’s drive system for controlled gate movement.

A worn, cracked, stretched, or glazed belt can cause slipping, slow travel, inconsistent movement, noise, or a gate that does not complete its open or close cycle. Replacing the belt with the correct Allomatic 4L230, 4L-230, or AX21 belt helps restore proper motor-to-drive power transfer in residential, commercial, and HOA gate access applications. Before ordering, confirm the operator model and belt number printed on the existing belt or listed in the operator parts manual.

Key Features

• Genuine Allomatic OEM replacement drive belt
• Cross-referenced as 4L230, 4L-230, and AX21 for easier identification
• Compatible with Allomatic SL-90DC PRO slide gate operators
• Compatible with Allomatic SW-375DC PRO swing gate operators
• Helps restore proper motor-to-drive power transfer
• Common replacement part for belt slip, slow travel, noise, or inconsistent gate movement
• Suitable for DC slide and swing gate operator service
• Verify the existing belt marking and operator model before replacement

Technical Specifications

• Manufacturer: Allomatic
• Part Number: 4L230
• Alternate Part Formatting: 4L-230
• Alternate Belt Number: AX21
• Product Type: Motor/drive belt
• Application: Gate operator drive system
• Compatibility: Allomatic SL-90DC PRO and SW-375DC PRO gate operators
• Function: Transfers power from the motor to the operator drive mechanism
• Use Case: Replacement belt for worn, cracked, stretched, glazed, or slipping belts
• Part Status: Genuine OEM replacement part
• Verification Required: Confirm operator model, existing belt number, and parts diagram before ordering

Conclusion

The Allomatic 4L230 Belt is a genuine OEM replacement part for compatible Allomatic operators that require a 4L230, 4L-230, or AX21 motor belt. Because belt size is tied to the specific operator configuration, checking the existing belt marking and matching it to the SL-90DC PRO or SW-375DC PRO model helps ensure correct fit and proper drive performance after installation.