The A008 Connecting Rod Joint Bearing is a precision replacement internal bearing designed for GK9 portable bag closer machines. Installed inside the connecting rod eye, this bearing supports the machine’s reciprocating crank mechanism, ensuring smooth rotary movement while reducing friction and mechanical wear. If your bag stitching machine develops excessive vibration, abnormal operating noise, or rough crank movement due to a worn bearing, replacing this component can help restore smooth and reliable performance.

This replacement bearing is manufactured to match the original connecting rod assembly used in many GK9 handheld bag sewing machines. It is supplied as the bearing only and does not include the complete connecting rod arm. Please verify your machine’s layout and the dimensions of your existing bearing before purchasing.

Designed for Smooth Power Transmission

The connecting rod joint bearing is a vital component of the internal drive mechanism. It allows the crank linkage to rotate freely while efficiently transmitting power from the motor to the needle and feed system.

Its precision-engineered construction minimizes rotational resistance, helping maintain stable stitching speed while reducing wear on surrounding moving parts. The bearing is ideal for continuous-duty bag stitching operations in warehouses, agriculture, food processing, fertilizer packaging, and industrial packing environments.

Key Features

• Precision replacement A008 Connecting Rod Joint Bearing
• Designed for GK9 portable bag closer machines
• High-speed radial load support for crank linkage assemblies
• Hardened chrome steel bearing construction
• Ultra-low friction design for smooth machine operation
• Dual-shielded protection against dust, lint, and crop fibres
• Precision OEM-style press-fit dimensions
• Helps reduce vibration and internal mechanical wear
• Supports reliable power transmission during continuous operation
• Supplied as bearing only (connecting rod assembly not included)

Machine Compatibility

Designed to fit portable bag closer machines built on the standard GK9 mechanical platform.

Compatible Models

• GK9-2
• GK9-8
• GK9-18
• GK9-18A
• GK9-200
• GK9-500

Also compatible with equivalent handheld portable bag closer machines from:

• Newlong (matching handheld styles)
• Revo
• Gemsy
• Zoje
• Other standard China-made portable bag stitching machines using the same mechanical design

Please cross-check your machine’s parts diagram and existing bearing dimensions before ordering.

Machine Compatibility Table

Suitable Bag Materials

Although this bearing does not contact the bag material directly, it supports smooth machine operation while stitching:

• Woven polypropylene (PP) sacks
• Burlap bags
• Jute bags
• Canvas bags
• Multi-wall paper bags
• Feed bags
• Grain bags
• Fertilizer sacks

Why Replace the Connecting Rod Joint Bearing?

Replacing a worn or damaged bearing can help:

• Restore smooth crank movement
• Reduce internal friction
• Lower operating vibration
• Minimize mechanical noise
• Improve transmission efficiency
• Extend the service life of moving components
• Maintain consistent high-speed bag stitching performance

Installation Guide

1. Disconnect the bag closer from the power supply.
2. Open the machine housing according to the service manual.
3. Remove the connecting rod assembly.
4. Carefully press out the worn bearing.
5. Press-fit the new A008 bearing into the connecting rod eye.
6. Reassemble the mechanism.
7. Rotate the crank manually to ensure smooth movement before operating the machine.

Professional installation is recommended for accurate fitting and optimal machine performance.

Frequently Asked Questions

What is the purpose of the A008 Connecting Rod Joint Bearing?

The A008 bearing allows the connecting rod to rotate smoothly while transferring power from the motor to the needle and feed mechanism. It reduces friction and supports reliable machine operation.

Does this product include the complete connecting rod?

No. This listing includes only the A008 Connecting Rod Joint Bearing. The connecting rod arm is sold separately.

Which machines is this bearing compatible with?

It is compatible with GK9-2, GK9-8, GK9-18, GK9-18A, GK9-200, GK9-500, and many compatible portable bag closer machines using the standard GK9 mechanical framework.

Can replacing this bearing improve machine performance?

Yes. A worn bearing can cause vibration, increased friction, and rough crank movement. Replacing it helps restore smoother and more efficient operation.

How do I confirm compatibility?

Compare your existing bearing with your machine’s exploded parts diagram and verify the dimensions before purchasing.