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The 9980 Series Q7 B5666 is a 75 horsepower post hole digger gearbox sized for the larger horsepower tractors used in commercial fencing, vineyard installation and broad-acre infrastructure work. The 4:1 reduction ratio steps the 540 RPM PTO down to a slower, higher-torque auger speed — better for cutting clean holes in heavy clay or rocky soils where a faster small-tractor gearbox would stall.
Standard 1 3/8" x 6 spline input matches all common Australian PTO drive shafts. Output shaft is 2" diameter round with 1/2" cross drilling for standard auger mounting.
Freight paid to any destination in Australia. For smaller tractors, see the Q5 B1666 (35HP) and Q6 B4666 (50HP) gearboxes. Augers in a range of diameters available — search "augers" on this website.
Order before 11am and we dispatch the same business day. We ship Australia-wide, including rural and regional areas — delivery times vary by location and carrier.
Free delivery on orders over $200. Orders under $200 incur a flat $20 shipping charge.
Ordering Bareco parts urgently, or shipping to a remote location? Call us on 1300 027 886 before you order and we'll confirm dispatch time frames.
All products come with guarantees that cannot be excluded under the Australian Consumer Law. You're entitled to a replacement or refund for a major failure, and to compensation for any other reasonably foreseeable loss or damage. You're also entitled to have goods repaired or replaced if they fail to be of acceptable quality, where the failure isn't major.
For any warranty or product fault enquiry, contact us on 1300 027 886 or sales@uniclamp.com.au with your order details.
