Hot Sale Pistachio Automatic Cashew Macadamia Pine Nut Sheller Processing Machine

Product Description

Product Description

The pistachio cracking machine is specialized equipment designed for the deep processing of nuts. Engineered to handle the specific characteristics of pistachios—namely their hard shells and the fact that some naturally split open—it performs a complete sequence of operations: automatic feeding, grading, gentle cracking, and air-based shell-kernel separation. Widely used in nut processing plants, food factories, and export processing enterprises, it replaces manual shelling, significantly boosts processing capacity, and ensures a high rate of kernel integrity. The machine can operate as a standalone unit or be integrated with drying, washing, and color-sorting equipment to form a complete pistachio processing line.

Key Equipment Components

The complete system consists of a feed hopper, a material elevator, a grading and screening unit, an adjustable shell-cracking unit, an air-gravity separation system, and an electrical control cabinet.

1. Feed Hopper + Elevator: Automates raw material loading and ensures uniform feeding, reducing the need for manual input;
2. Grading and Screening Unit: Sorts pistachios by size for separate processing, preventing kernel breakage caused by mixing nuts of different sizes;
3. Shell-Cracking Unit (Core Component): Features a flexible compression mechanism with adjustable clearance to precisely control cracking force;
4. Air-Gravity Separation System: Separates shells and shell fragments from intact kernels based on weight differences, discharging them through separate outlets;
5. Electrical Control Cabinet: Provides centralized control and supports variable frequency speed regulation to adjust feeding speed and cracking pressure.

The process works as follows:

Raw materials are fed into the hopper and conveyed by a lift to a grading screen, which sorts the nuts by size. The graded material then enters the cracking chamber, where the shells are broken via gentle compression. The resulting mixture passes to an air-gravity separator; lighter shells are extracted by airflow, while the heavier pistachio kernels settle and are discharged. Uncracked pistachios can be recirculated for a second cracking pass to improve the overall shelling rate.

1. Pistachios (Primary Raw Material)

- Fully closed (unopened) pistachios
- Naturally semi-opened pistachios
- Mixed-size in-shell pistachios (dried/roasted product is ideal)

Not suitable: Fresh pistachios with high moisture content; high-moisture materials tend to stick to the machinery and cause a sharp increase in kernel breakage rates. Raw materials must be dried first.

Product Name	Capacity (kg/h)	Power	Weight	Dimensions (m)
Pistachio Shelling Machine	100-120kg/h	2.6	460	Shelling host: 2.6×1.2×1.35Elevator: 1.7×0.35×2.0

This integrated pistachio shelling unit completes feeding, elevating, roller cracking and screening all-in-one. Simply load raw pistachios, and the machine automatically cracks shells and separates kernels from husks in a single pass.

Only one operator is required for feeding and monitoring the whole process.

The single-unit setup is well-suited for small-scale processing plants, workshops and sites with limited daily output, constrained budgets or limited workshop floor space.

Two independent shelling modules can be combined for higher throughput. Dual units support simultaneous operation. You may choose separate feeding for each channel or merge material flow as required. After shelling, materials can be screened individually or combined for unified separation.

Each single unit reaches a capacity of 300-400 kg/h. Running two units doubles total output. Only 1-2 operators are needed, mainly for rawmaterial feeding and finished-product collection.

This dual-unit combination fits medium-to-large processing facilities handling large-batch orders with long-shift production, as well as factories planning future capacity expansion.

Similar machines

Pistachio Green Hull Remover

Pistachio Color Sorter

Pistachio Chopper

Specifically designed for freshly harvested pistachios, this process uses high-speed scrubbing to remove the outer green hull, separating it from the nut itself as a pretreatment for subsequent drying.

Utilizes optical recognition technology to rapidly sort pistachio kernels, removing discolored, moldy, or off-color pieces to enhance the visual quality and commercial grade of the finished product.

Employs high-speed cutting blades to chop nuts—such as pistachios and almonds—into fragments of various sizes for use in baking, confectionery, and ready-to-eat snack production.

Sharing Success Stories

Our company's pistachio shelling equipment has been exported in volume to major pistachio-producing and nut-processing nations—including Kyrgyzstan, Tajikistan, Turkey, Uzbekistan, Iran, South Africa, and Vietnam—where it has received consistently positive feedback. A notable example is:
Kyrgyzstan | A standalone unit deployed at a local pistachio growers' cooperative (handling primary processing for their own orchards and supplying local wholesale markets; operating with a limited budget and compact workshop space).
The equipment delivers a stable processing capacity of 340–380 kg/h, a shelling rate of 94–96%, and a kernel breakage rate kept under 7%. Labor requirements were reduced from a team of over ten people manually shelling nuts to just one operator. The processed kernels are supplied to local snack workshops and agricultural wholesale markets, significantly boosting the product's value-added potential; the client recouped their investment within seven months and subsequently placed additional orders to expand processing capacity.

Frequently Asked Questions

1. What is the hourly processing capacity of this pistachio shelling machine?

The standard capacity for a single unit is **300–400 kg/h; when two units are combined, the capacity reaches 700–800 kg/h. Actual output may fluctuate slightly depending on pistachio size, moisture content, and raw material uniformity.

2. What are the approximate shelling and kernel breakage rates?

With properly dried raw material, the shelling rate is 93–97%, and the kernel breakage rate is 5–8%. Breakage increases significantly with higher moisture content; therefore, **raw materials must be dried prior to processing.

3. Can the machine process pistachios of varying sizes directly?

Processing a mixed batch directly is not recommended. The machine features an integrated grading mechanism that sorts pistachios by diameter and shells different sizes separately. If there is a significant size disparity, the roller sleeve accessories can be swapped and the shelling gap adjusted.

4. Can it process other types of nuts?

It is compatible with hazelnuts, almonds, and apricot kernels. However, since hardness and diameter vary among nut types, adjustments to the gap or replacement of roller accessories are required; settings are not directly interchangeable.

5. What are the moisture content requirements for the raw pistachios?

It is designed for dried pistachios, with an optimal moisture content of 8–12%. Fresh, high-moisture pistachios cannot be shelled directly; they must first undergo **green hull removal and drying** before being fed into the shelling machine.

6. How many operators are required?

A single unit requires only **one operator**, primarily responsible for feeding material, monitoring operation, and collecting the finished product. A dual-unit production line can be managed by 1–2 operators.

7. How are un-shelled pistachios handled?

The equipment supports material recirculation; un-shelled nuts are cycled back for re-shelling, thereby increasing the overall yield of finished kernels.