CHIPPING
Rechipper
Reduces oversized chips to acceptable sizes
The Acrowood Rechipper
The Acrowood Rechipper is designed to reduce oversized chips to a smaller size. Chips slide down the flat-bottomed spout which uses the full length of knife and anvil for chipping. With excellent oversize chip reduction and high capacity, the Acrowood Rechipper is a superior choice for overs processing in the wood room.
Rechipper Features
- 42″ or 61″ diameter discs available
- Flat bottomed spout for full use of anvil width
- 10 knives for excellent oversize chip reduction with high capacity
- Gravity feed with options for bottom or overhead discharge
- Heavy-duty, face-mounted, babbitt adjusted knives
- Simple infeed spout
- Easily mounted, 4-bolt, pillow block bearings
- Easy knife access
Excellence in Chip Processing
Acrowood Rechippers are designed to reduce oversized chips to an acceptable size for pulping with minimal generation of pins or fines.
For maximum effectiveness chips would ideally be oriented so that the long axis of the chip would be perpendicular to the cut, and the resulting 2 pieces would each be half the length (approx.) of the original chip.
Rechipper Machine Options
- 42” or 61” discs are both available with 10 knife installation.
- Overhead or bottom discharge configurations available.
- Heavy-duty, face-mounted, Babbitt adjusted knives
- Simple infeed spout
- Easily accessed, 4-bolt, pillow block bearings
- 42” rechipper 50 HP – 3,600 lb. less motor Capacity—10-12 uph (~20 GTPH) (~50-70 m3/hr)
- 61” rechipper 100 HP – 7,000 lb. less motor Capacity—18-20 uph (~40 GTPH) (~100-115 m3/hr)
Sawmill Applications
This classic machine has seen its best use in processing overs generated in sawmilling applications prior to the pulp mill. When generally large chips (+2″ round or square hole, and larger) and gross overs can be separated by a rotary screen, a rechipper is a good way to chop these up into smaller pieces before they are sent to the pulp chip van for transport.
Chip Processing Reliability
Where the pulp mill chip buyer has established a size specification that limits the percentage of oversized and gross overs chips to a maximum allowable number, the use of the rotary screen/rechipper combo can typically achieve this with sufficient reliability.
Overthick Chip Treatment Metrics
Solution
Rechipper
Efficiency
Overthick reduction: 65%
Fines generation: 5%
Pins generation: 25%
Maintenance
Knives to change
Anvils to keep sharp
Weekly access at least
Relative Cost
Inexpensive
42 inch Rechipper – Technical Machine Drawing
Specifications: Rechipper (imperial)
| Model | Disc Diameter (in) | Length (in) | Height (in) | Width (in) | Weight (lbs) | RPM | Motor (HP) |
|---|---|---|---|---|---|---|---|
| 42 | 42 | 60 | 62 | 49 | 3600 | 800 | 50 |
| 61 | 61 | 88 | 85 | 55 | 7000 | 600 | 100 |
Specifications: Rechipper (metric)
| Model | Disc Diameter (m) | Length (m) | Height (m) | Width (m) | Weight (mt) | RPM | Motor (KW) |
|---|---|---|---|---|---|---|---|
| 42 | 1.07 | 1.52 | 1.57 | 1.24 | 1.6 | 800 | 37 |
| 61 | 1.55 | 2.24 | 2.16 | 1.40 | 3.2 | 600 | 75 |
The Acrowood Rechipper brochure
Request the Acrowood rechipper machine brochure provided in PDF format for easy reading and printing.
Case Study: Overthick Chip Chip Treatment
A rechipper is best used in sawmilling applications prior to the pulp mill. When generally large chips (+2″ round or square hole, and larger) and gross overs can be separated by a rotary screen, a rechipper is a good way to chop these up into smaller pieces before they are sent to the pulp chip van for transport.
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