Schaller 10540503.22.70 Schaller M4 90 Bass Tuning Machines

The Schaller M4 90 (Light) Bass Tuning Machines offer a blend of precision engineering and weight reduction, making them an ideal choice for bassists seeking high-performance tuners without compromising on quality. Designed and manufactured in Germany, these tuners are part of Schaller’s M4 Light series, which delivers legendary quality at a stunning 40% less weight compared to traditional models. This reduction in weight contributes to improved instrument balance and comfort during extended playing sessions.

These tuners feature a high gear ratio of 1:20, ensuring very precise tuning adjustments. The sealed tuners are lubricated with Schaller’s special grease, providing lifetime maintenance-free service. All parts are precision-crafted and surface-finished, with a self-locking drive that ensures even, delicate, and steady tuning. The string posts are made of high-grade brass and fitted into the housing with utmost precision, guaranteeing the best possible tuning accuracy and wear resistance.

Key Features:

• High gear ratio of 1:20 for precise tuning adjustments
• Sealed tuners lubricated with Schaller special grease for maintenance-free operation
• Precision-crafted and surface-finished parts for durability and performance
• Self-locking drive mechanism for stable tuning
• String posts made of high-grade brass for optimal tuning accuracy
• Weight: 52 g per piece (including threaded bushing)
• Configuration: 2 Left / 2 Right
• Mounting diameter: 14 mm
• Axle diameter: 11 mm
• Shaft length: 24.2 mm (splitted post)
• Screw lug angle: 90°
• Surface finish: Black Chrome

Technical Specifications:

• Model: M4 90 Light
• Surface Finish: Black Chrome
• Configuration: 2 Left / 2 Right
• Gear Ratio: 1:20
• Axle Diameter: 11 mm
• Mounting Diameter: 14 mm
• Shaft Length: 24.2 mm (splitted post)
• Screw Lug Angle: 90°
• Weight: 52 g per piece (including threaded bushing)
• Surface Finish: Black Chrome

Package Contents:

• 4 x Threaded bushings
• 4 x Washers
• 4 x Mounting screws (M2.2 x 9.5)