PTO Shaft for Krone BIGpack 1290 HDP XC 12130 | CV Replacement
CAT 7/8 CV PTO shaft for Krone BIGpack 890, 1270, 1290, 1290 HDP, 1290 XC, 12130 HDP and 12130 XC square balers. Rated 200+ HP at 1000 RPM. CE certified. Ships from Richmond, BC.
This PTO shaft is a CAT 7/8 SFT SH Series constant-velocity assembly built for the Krone BIGpack range of large square balers. It transfers rotational power from the tractor PTO output to the baler gearbox and flywheel at 1,000 RPM, rated for continuous operation above 200 horsepower. The CV joint eliminates the cyclic speed pulses that standard U-joints produce at working angles, protecting the baler plunger, knotters, and drive chains from the vibration-induced fatigue that causes mid-season failures. Compatible models include the BIGpack 890, 1270, 1290, 1290 HDP, 1290 XC, 12130 HDP, and 12130 XC.
High-Performance PTO Shaft Solutions for Krone BIGpack Series
Krone BIGpack balers operate at the upper limit of what a PTO driveline assembly must deliver. The 1290 HDP model alone requires 184–245 PTO HP depending on generation, drives a 600 kg flywheel past 300 RPM, and cycles its plunger at 45 strokes per minute to produce bales weighing 800–1,100 kg. Every component in this PTO shaft is sized to handle those loads without degradation over a full baling season.
| Specification | Value |
|---|---|
| PTO Category | CAT 7/8 SFT SH Series |
| Joint Type | Constant Velocity (CV) |
| HP Rating | 200+ HP continuous |
| PTO Speed | 1,000 RPM |
| Safety Guard | CE-compliant, free-spinning shield |
| Overload Protection | Shear-bolt clutch (friction-disc on request) |
| Compatible Models | 890, 1270, 1290, 1290 HDP, 1290 XC, 12130 HDP, 12130 XC |
Why CV over U-joints? At operating angles above 3°, standard universal joints create speed fluctuations of up to ±15% per revolution. On a 200+ HP driveline spinning at 1,000 RPM, those pulses translate into measurable shock loads on the baler gearbox. The constant-velocity joint on this PTO shaft maintains uniform rotational speed across the full angle range, eliminating that source of wear entirely.
Engineered for Extreme Baling Conditions
Large square baling subjects a PTO driveline assembly to a combination of forces that few other agricultural operations match: sustained high torque, continuous high RPM, cyclic shock from the plunger, abrasive dust ingestion, and constant telescoping motion during turns. This PTO shaft addresses each of those demands at the material and design level.
20CrMnTi CV Joint Bearings
Forged alloy steel, case-carburized to HRC 58–62. This grade resists pitting and spalling at the elevated bearing temperatures generated by 200+ HP continuous loads — a measurable improvement over standard carbon-steel joints in field endurance testing.
Q345 Heavy-Wall Tubes
Cold-drawn lemon-profile telescoping tubes with yield strength ≥ 345 MPa. The heavy-wall section prevents the torsional twist and buckling that thinner tubes develop under the 45-stroke-per-minute plunger cycle of Krone HDP balers.
CNC-Machined Spline Bores
Yoke splines are hobbed and ground to sub-0.05 mm concentricity. Tight spline tolerances eliminate the backlash that causes hammering at the tractor-shaft connection point — the second most common source of PTO driveline noise and premature wear.
Zinc-Phosphate Corrosion Protection
All exposed steel surfaces receive a zinc-phosphate conversion coating before assembly. The safety guard is finished in UV-stabilized polymer to prevent cracking during extended outdoor storage between seasons.
Essential Replacement PTO Shaft Components
When ordering a replacement PTO shaft for Krone BIGpack 1290 or any other model in the range, it helps to understand the four main wear zones and the components that address them. Each zone has a different failure mode, a different inspection interval, and a different replacement trigger:
| Wear Zone | Component | Failure Mode | Inspection Trigger |
|---|---|---|---|
| CV Joint Housing | Bearing races & balls | Pitting, spalling, heat discoloration | Vibration increase, clicking on turns |
| Telescoping Tubes | Inner & outer lemon profiles | Wear, play, insufficient overlap | Visible axial play > 3 mm |
| Yoke Splines | Tractor-side & implement-side yokes | Spline wear, backlash, hammering | Rotational free-play > 2° |
| Safety Guard | Plastic shield & guard bearings | Cracking, seized bearing, missing sections | Visual check before each use |
This PTO shaft ships as a fully assembled unit covering all four zones. If you only need individual components — a cross & bearing kit, a replacement guard, or a single yoke — contact our team. We can supply parts separately for existing PTO drive shaft assemblies still within their serviceable lifespan.
Applications: PTO Shaft for Krone BIGpack Square Balers
The BIGpack range spans seven models with different chamber sizes, density ratings, and throughput levels. This PTO drive shaft for Krone 1290 HDP square baler and its sister models is engineered for the specific load profile of each variant:
BIGpack 890 (XC)
80 × 90 cm chamber. Standard-density straw and hay baling at 120+ PTO HP. Ideal entry point for mid-size operations.
BIGpack 1270 (XC/VC)
120 × 70 cm chamber. Versatile format for straw, hay, and silage. MultiBale option packs up to 9 small bales inside one large wrapper.
BIGpack 1290 (XC)
120 × 90 cm chamber. The all-rounder — popular worldwide for high-volume straw and hay at 122+ PTO HP with HighSpeed pickup.
BIGpack 1290 HDP
High-density variant producing 25% heavier bales. 184–245 PTO HP needed. Extended baling chamber with 8 double knotters.
BIGpack 1290 XC
XCut cutting system variant with dual blade cassettes. Produces chopped straw at 44 mm or 88 mm theoretical cut lengths.
BIGpack 12130 HDP
120 × 130 cm chamber — the largest in the range. Maximum bale volume for straw contractors hauling long distances where transport cost per tonne matters.
BIGpack 12130 XC
XCut version of the 12130 format. Combines maximum chamber volume with short-chop capability for animal bedding and biomass feedstock.
Krone and BIGpack are trademarks of Maschinenfabrik Bernard Krone GmbH & Co. KG. These names are used for cross-reference identification only. We do not sell Krone-manufactured products.
Questions About PTO Shaft for Krone BIGpack Square Balers
Q: What PTO shaft category does the Krone BIGpack 1290 HDP require?
A: The BIGpack 1290 HDP uses a CAT 7/8 SFT SH Series constant-velocity PTO shaft at 1,000 RPM. This same assembly fits all seven BIGpack models from the 890 through the 12130 XC.
Q: What is the advantage of a CV joint over standard U-joints on a BIGpack?
A: U-joints produce speed variation up to ±15% per revolution at operating angles above 3°. On a 200+ HP baler driving a 600 kg flywheel, those pulses accelerate knotter, gearbox, and chain wear. The CV joint delivers uniform speed, removing that failure source.
Q: How do I know when my PTO shaft needs replacing rather than servicing?
A: Replace the full assembly if the CV joint shows pitting or heat discoloration, if the telescoping tubes have more than 3 mm of axial play, or if the yoke spline free-play exceeds 2°. Individual components (bearings, guards) can be replaced separately if the rest of the shaft is serviceable.
Q: Does this PTO shaft fit the latest Krone BIGpack Gen 5 models?
A: The CAT 7/8 CV shaft is compatible with Gen 5 BIGpack 1290 variants (BP 405 series). Contact us with your baler serial number so we can verify the exact yoke profile and compressed length for your specific unit.
Q: What is the greasing schedule for this CV PTO shaft?
A: Apply NLGI Grade 2 lithium grease to CV joint points every 8 operating hours. Coat the telescoping tube profiles with moly grease before the season and again at the midpoint. Inspect the guard bearing and shear bolts at the same intervals.
Recommended Companion Products
Inspecting adjacent driveline components when fitting a new PTO shaft prevents the kind of cascading failures that cost full working days during peak baling season. Consider pairing your order with these items.
Cross & Bearing Kits
Series 7/8 cross & bearing kits (35 × 106.5 / 42 × 106.5 mm). 20CrMnTi carburized steel, HRC 58–62. Stock a spare set so a single worn bearing never sidelines your baler at harvest.
View Cross & Bearing Kits
Balers
Browse our complete range of PTO shafts for square balers, round balers, and large-format baler models from Krone, New Holland, Case IH, Hesston, and more.
Get Your Krone BIGpack PTO Shaft Shipped This Week
Send us your BIGpack model number and tractor PTO details. We will confirm the correct CAT 7/8 CV configuration, quote the assembly, and dispatch from Richmond, BC — typically within 5–7 business days for standard configurations.
Contact: Effie — EPG Canada Sales Representative Co., Ltd · 10891 Hogarth Dr, Richmond, BC V7E 3Z9
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