Epiroc (Former Atlas Copco)3128312649 / 3128202325 Hydraulic Rotary Actuator

3128312649 / 3128202325 Hydraulic Rotary Actuator

Related part numbers: 3128312643 / 3128312644 / 3128312645. It is the boom tilt rotary actuator for Epiroc Boomer series drill rigs.

Basic Information

• Brand: Epiroc (Former Atlas Copco)
• Applicable Model: Boomer 281, Boomer series tunneling drill rigs
• Type: Helical rotary hydraulic actuator (Rotary Actuator). Not a conventional linear cylinder. Used for tilting and angular rotation of drill boom / feed beam.
• Swing Angle: 180° (360° versions available in the same series)
• Application: Underground tunneling, mine drilling, high-pressure heavy-duty service

Distinction between the two part numbers

1. 3128312649: Complete rotary actuator assembly (main swing cylinder)
2. 3128202325: Matching seal repair kit

Purchase note: Many suppliers mark 3128312649/3128202325 as a set: actuator assembly + seal kit

Spare Parts for Repair

• Seal Kit: 3128202325
• Equivalent assemblies in the same specification: 3128312643, 3128312644, 3128312645
• Contents: Shaft seal, Glyd ring, Step seal, wear ring, dust seal and other high-pressure mining seals