New Holland 456 - User Manual

New Holland

Sicklebar Mower Specifications

451 456

Page 1 of 1

MODEL 451 456

even-foot nine-foot

CUTTERBAR LENGTH 7’3” (2210 mm) 9’3” (2819 mm) 9’3” (2819 mm)

OVERALL LENGTH 3’11” (1188 mm) 3’11” (1188 mm) 7’6” (2286 mm)

OVERALL WIDTH

operating 12’5” (3785 mm) 14’5” (4395 mm) 15’3” (4648 mm)

transport 6’2” (1870 mm) 7’2” (2175 mm) 7’2” (2175 mm)

HEIGHT

operating 3’3” (991 mm) 3’3” (991 mm) 3’3” (991 mm)

transport* 5’8” (1715 mm) 6’8” (2032 mm) 6’8” (2032 mm)

WEIGHT, APPROXIMATE 609 lb. (276 kg) 628 lb. (285 kg) 803 lb. (364 kg)

MOWER DRIVE Heavy-duty V-belt Heavy-duty V-belt Heavy-duty V-belt

KNIVES

speed ........................................1600 strokes per minute at 540 rpm..........................................................

stroke 3.375” (86 mm) 3.375” (86 mm) 3.375” (86 mm)

CUTTERBAR OPERATING RANGE ......................15 degrees below horizontal, 35 degrees above horizontal ........................................

TRACTOR REQUIREMENT ................Fits most CAT I and II 3-point hitch .................. Fits most tractors with standard

tractors with 540 rpm PTO ASAE drawbar and 540 rpm PTO

* plus lift range of tractor

LIFTS: Both lifts operable from the tractor seat. Tractor remote ram required for hydraulic lift on Model 456. Tractor power lift is standard on Model 451.

Safety begins with a thorough understanding of

the equipment. Always make sure you and

your operators read the Operator’s Manual

before using the equipment. Pay close

attention to all safety and operating

decals and never operate machinery

without all shields, protective devices

and structures in place.

Design, materials and/or specifications are subject to

change without notice and without liability therefor.

Specifications are applicable to units sold in Canada, the

United States, its territories and possessions, and may

var y outside these areas.

New Holland is a registered trademark of CNH America LLC.

Visit our Web site at www.newholland.com/na. Or, call toll-free 866-NEW-HLND (866-639-4563).

The mounted 451 has an exclusive telescoping

yoke that uses tractor power to lift the mower.

Straight-line motion of the drive head provides fast,

smooth cutting combined with less wear on the

knife assembly and hold-down clips.

Need help?

Do you have a question about the New Holland 456 and is the answer not in the manual?

The New Holland Sicklebar Mower, available in Models 451 and 456, is an agricultural implement designed for cutting crops and forage. These mowers are characterized by their sicklebar cutting mechanism, which provides a clean and efficient cut.

Function Description:

The primary function of the New Holland Sicklebar Mower is to cut various types of vegetation, such as hay and other forage crops, in preparation for baling or other harvesting processes. The sicklebar design utilizes a reciprocating knife assembly that moves across stationary guards, shearing the plant material. This method is known for its ability to cut close to the ground and handle a variety of crop conditions. The mowers are tractor-mounted implements, drawing power from the tractor's Power Take-Off (PTO) to drive the cutting mechanism and, in some cases, the lift system.

Important Technical Specifications:

Model 451:

Cutterbar Length: Available in two options:
- Seven-foot: 7'3" (2210 mm)
- Nine-foot: 9'3" (2819 mm)
Overall Length: 3'11" (1188 mm) for both cutterbar lengths.
Overall Width:
- Operating (seven-foot): 12'5" (3785 mm)
- Operating (nine-foot): 14'5" (4395 mm)
- Transport (seven-foot): 6'2" (1870 mm)
- Transport (nine-foot): 7'2" (2175 mm)
Height:
- Operating: 3'3" (991 mm)
- Transport*: 5'8" (1715 mm) for the seven-foot model, 6'8" (2032 mm) for the nine-foot model. (*plus lift range of tractor)
Weight, Approximate:
- Seven-foot: 609 lb. (276 kg)
- Nine-foot: 628 lb. (285 kg)
Mower Drive: Heavy-duty V-belt.
Knives:
- Speed: 1600 strokes per minute at 540 rpm.
- Stroke: 3.375" (86 mm).
Cutterbar Operating Range: 15 degrees below horizontal to 35 degrees above horizontal.
Tractor Requirement: Fits most CAT I and II 3-point hitch tractors with 540 rpm PTO.

Model 456:

Cutterbar Length: 9'3" (2819 mm).
Overall Length: 7'6" (2286 mm).
Overall Width:
- Operating: 15'3" (4648 mm)
- Transport: 7'2" (2175 mm)
Height:
- Operating: 3'3" (991 mm)
- Transport*: 6'8" (2032 mm). (*plus lift range of tractor)
Weight, Approximate: 803 lb. (364 kg).
Mower Drive: Heavy-duty V-belt.
Knives:
- Speed: 1600 strokes per minute at 540 rpm.
- Stroke: 3.375" (86 mm).
Cutterbar Operating Range: 15 degrees below horizontal to 35 degrees above horizontal.
Tractor Requirement: Fits most tractors with standard ASAE drawbar and 540 rpm PTO.

Usage Features:

Tractor Mounting: Both models are designed to be mounted on a tractor, allowing for easy maneuverability across fields. The Model 451 utilizes a 3-point hitch, while the Model 456 uses a standard ASAE drawbar.
PTO Driven: The cutting action is powered by the tractor's 540 rpm PTO, ensuring consistent and reliable operation.
Adjustable Cutterbar: The cutterbar operating range, from 15 degrees below horizontal to 35 degrees above horizontal, allows the operator to adapt to varying terrain and crop conditions, ensuring an optimal cut.
Lift Systems:
- Model 451: Features an exclusive telescoping yoke that uses tractor power to lift the mower. Tractor power lift is standard on this model, and both lifts are operable from the tractor seat.
- Model 456: Requires a tractor remote ram for hydraulic lift. Both lifts are operable from the tractor seat. This hydraulic lift system provides convenient control over the mower's position.
Transport Configuration: The mowers can be configured for transport, reducing their overall width and height (when considering the transport height plus the tractor's lift range) for easier movement between fields or on roads.
Efficient Cutting Mechanism: The straight-line motion of the drive head is highlighted as a feature that provides fast, smooth cutting. This design aims to minimize wear on the knife assembly and hold-down clips, contributing to operational efficiency and potentially reducing maintenance frequency.

Maintenance Features:

Heavy-duty V-belt Drive: The use of a heavy-duty V-belt for the mower drive suggests a robust and potentially easy-to-replace component, contributing to straightforward maintenance of the power transmission system.
Knife Assembly Design: The design emphasizing "less wear on the knife assembly and hold-down clips" implies a focus on durability and reduced frequency of component replacement for the cutting elements. While specific maintenance procedures are not detailed in this document, this design aspect suggests a lower overall maintenance burden for these critical parts.
Operator's Manual Importance: The "THINK SAFETY" section strongly emphasizes the importance of reading the Operator's Manual before using the equipment. This manual would contain detailed information on routine maintenance schedules, lubrication points, adjustment procedures, and troubleshooting, which are crucial for the longevity and safe operation of the mower.
Protective Devices: The safety warning also highlights the necessity of operating the machinery with all shields, protective devices, and structures in place. This is a maintenance-related safety feature, as ensuring these components are intact and functional is part of regular pre-operation checks and maintenance.

In summary, the New Holland Sicklebar Mowers (Models 451 and 456) are robust, tractor-mounted implements designed for efficient crop cutting. They offer various cutterbar lengths and configurations to suit different agricultural needs, with features like adjustable cutterbar operating ranges and convenient lift systems. The heavy-duty V-belt drive and design considerations for reduced wear on cutting components suggest a focus on durability and ease of maintenance, although detailed maintenance instructions would be found in the comprehensive Operator's Manual. Safety is paramount, with strong recommendations for understanding the equipment and ensuring all protective measures are in place.