What Are the Main Types of Oven Trolleys?

Oven trolleys can be divided into different groups according to the function they perform within the production line. One model may be designed to transport trays, while another may be used during dough proofing or oven loading.

The main trolley types commonly used in professional bakeries and pastry production facilities include:

Open tray trolleys
Covered tray trolleys
Rotary oven tray trolleys
Loader trolleys
Trolleys used with oven loading systems
Cooling and transport trolleys

To identify the correct trolley type, the first question should not only be, "Which product will be transported?" It is also necessary to determine the stage of production in which the trolley will be used.

What Is a Tray Trolley?

A tray trolley is a shelved trolley used to transport or store bread trays, hamburger bun trays, baguette trays, loaf pans and similar bakery production equipment.

Open tray trolleys simplify the movement of trays between different production sections. Trays can be transferred from the preparation area to the proofing section, the oven loading area or the cooling area after baking.

When selecting a tray trolley, the nominal tray dimensions alone are not sufficient. The external edge design of the tray and the way it rests on the trolley rails must also be checked. Different tray models described by the same nominal dimensions may have different external profiles.

Tray trolleys manufactured by EKMAŞ can be configured as open, covered or oven-compatible models for different tray dimensions and production capacities.

What Is a Loader Trolley?

A loader trolley is used to store and transport loaders or other equipment that supports dough handling during the production process.

In traditional bread production, divided dough pieces may be arranged on proofing cloths. The loaders supporting these cloths can be stored systematically on a trolley during resting, proofing and transportation.

A loader trolley and a tray trolley do not serve the same purpose. A tray trolley has rails designed to support metal bakery trays, while the construction of a loader trolley depends on the loader system and dough-handling method used by the bakery.

The loader type, cloth dimensions, number of loaders and oven loading system should be communicated to the manufacturer before ordering.

What Is a Covered Trolley?

A covered trolley is a tray trolley enclosed with a protective curtain or surrounding cover. This structure helps reduce the direct exposure of products to air movement during transportation or short waiting periods.

Covered trolleys can be a practical option for businesses without a dedicated proofing chamber or for operations where loaded trays must wait briefly in the production area. However, a covered trolley does not replace a professional proofing chamber with controlled temperature and humidity.

When selecting a covered trolley, the curtain material, opening system, cleanability and overall external dimensions should be evaluated.

Trays are not included in the product price and may be shown in product images for demonstration purposes.

What Is a Rotary Oven Trolley?

A rotary oven trolley is a specialized trolley that enters the rotary rack oven directly and connects to the oven's lifting or rotating mechanism during baking.

Standard open tray trolleys are generally designed for transportation within the production area. Rotary oven trolleys require materials suitable for elevated temperatures, dimensions compatible with the oven and the correct connection system.

The upper hook, lower centering point or connection structure may differ according to the oven manufacturer and model. For this reason, an order should not be placed using only the tray dimensions.

The following information should be checked before ordering:

Oven manufacturer and model
Clear oven doorway dimensions
Internal oven dimensions
Upper connection or hook structure
Lower centering system
Tray dimensions
Required shelf quantity and spacing

EKMAŞ can manufacture rotary oven trolleys for different dimensions and connection systems.

How to Determine Oven and Tray Dimensions

The dimensions of the oven trolley should be determined according to the trays being used and the area in which the trolley will operate. For rotary oven trolleys, the dimensions must be determined according to the technical construction of the oven.

Common tray dimensions used in professional bakery production include:

40 x 60 cm
59 x 80 cm
60 x 90 cm
74 x 98 cm
75 x 104 cm
80 x 100 cm

The external dimensions of the trolley will naturally be larger than the tray dimensions. However, the frame profiles, shelf projections, wheels and oven connection components all affect the total size. Trolley dimensions should therefore not be estimated only from the tray size.

There is no single fixed clearance value that applies to every oven. The oven manufacturer's technical specifications should be followed to determine the clearance required for safe rotation, airflow and connection compatibility.

Doorways, corridors, ramps, lifts and turning areas along the trolley's operating route should also be measured. A trolley that fits inside the oven may still be unable to pass through a narrow production-area doorway.

How to Select Shelf Quantity and Spacing

The number of shelves determines how many trays the trolley can transport at one time. However, a larger number of shelves does not always mean that the trolley is more suitable.

The clear distance between shelves must be appropriate for the height of the product and its production stage. Dough expansion, the height of bread pans and the airflow required around the products may all affect the necessary shelf spacing.

The following information should be considered when determining the shelf configuration:

Height of the tray or pan
Expected dough height during proofing
Daily production volume
Number of trays used in each production batch
Loaded weight of each tray
Total safe load capacity of the trolley

A higher shelf quantity can increase capacity, but narrow spacing that is unsuitable for the products can cause operational problems. Shelf quantity and shelf spacing must be determined together.

Material and Durability Criteria

The material used for an oven trolley should be selected according to its operating environment. Humidity, temperature, cleaning method, transported load and whether the trolley enters the oven all affect the material requirements.

Professional oven trolleys may be manufactured from stainless steel or metal structures with a suitable surface treatment. Stainless steel can provide advantages in corrosion resistance and cleanability.

For trolleys used inside rotary ovens, both the material and wheel system must be suitable for the operating temperature. An open trolley used only for transportation does not have the same technical requirements as a trolley that enters the oven directly.

The following characteristics should be checked when evaluating materials and construction:

Frame profile dimensions and wall thickness
Shelf sheet thickness
Welding quality and consistency
Frame stability under load
Surface cleanability
Suitability for the operating temperature

How to Select the Wheel System

The wheel system directly affects operating comfort and maintenance requirements. An unsuitable wheel can make the trolley difficult to move, damage the production floor or wear prematurely.

The following conditions should be evaluated when selecting wheels:

Empty and loaded trolley weight
Floor material and surface irregularities
Operating temperature
Daily movement frequency
Need to turn in narrow areas
Whether the wheels enter the oven

Different wheel materials, including rubber, polyamide and polyurethane, may be considered for trolleys used within the production area. Rotary oven trolleys may require specialized wheels or connection solutions suitable for high-temperature operating conditions.

Four swivel wheels can offer high maneuverability in limited spaces. For long and straight routes, a combination of fixed and swivel wheels may provide easier directional control.

Step-by-Step Oven Trolley Selection Process

1. Define the Intended Application

First determine whether the trolley will transport trays, loaders, dough or baked products. The intended application directly determines the required trolley type.

2. Check the Oven Type

When the trolley will enter a rotary oven, the oven manufacturer, model, connection system and internal dimensions must be checked. For a trolley used only within the production area, measure the operating route and available space.

3. Determine the Tray or Loader Dimensions

Confirm the exact dimensions of the trays, pans or loaders. Instead of providing only the nominal size, send the manufacturer the actual external dimensions or a physical sample whenever possible.

4. Calculate Shelf Quantity and Spacing

Determine the number of trays used in a production batch. Select the shelf spacing according to the product height and the expected expansion during proofing.

5. Calculate the Total Load

Multiply the loaded weight of one tray by the number of trays that will be transported simultaneously. Confirm that the trolley frame, shelves and wheels can carry the resulting load safely.

6. Examine the Floor and Maneuvering Area

Floor material, thresholds, ramps, drainage channels and turning areas affect wheel selection. The turning radius should also be evaluated in narrow production spaces.

7. Determine the Material and Cleaning Method

Select a frame material suitable for the humidity, temperature and cleaning products used in the production area. Choose a construction that allows practical daily cleaning.

8. Obtain Technical Measurement Approval

For custom-manufactured or rotary oven trolleys, approve the external dimensions, number of shelves, shelf spacing and connection system in writing before production.

Oven Trolley Selection Checklist

Use the following checklist before placing your order:

Has the intended application been defined?
Has the oven manufacturer and model been confirmed?
Have the oven doorway and internal dimensions been measured?
Has the upper and lower connection system been measured?
Are the tray or loader dimensions confirmed?
Is the shelf quantity suitable for the production capacity?
Is the shelf spacing sufficient for the product height?
Has the total loaded weight been calculated?
Is the frame material suitable for the operating environment?
Are the wheels suitable for the floor and temperature?
Can the trolley pass through every doorway and corridor?
Are all surfaces accessible for cleaning?
Are spare wheels and replacement components available?
Have the technical dimensions been approved before production?

Confirming these details before ordering significantly reduces the risk of selecting the wrong model or requiring modifications after delivery.

Frequently Asked Questions

What should be checked first when selecting an oven trolley?

First determine the stage of production in which the trolley will be used and whether it will enter the oven. The tray dimensions, oven dimensions and connection system should then be checked.

What is the difference between a tray trolley and a loader trolley?

Tray trolleys are used to transport metal bakery trays and pans. Loader trolleys are designed to store and transport loaders or related dough-handling equipment.

Can a standard tray trolley be used in a rotary oven?

No. A trolley entering a rotary oven must be manufactured for the oven's operating temperature, internal dimensions and connection system. Standard transport trolleys should not be used directly inside rotary ovens.

How much clearance should be left between the trolley and the oven?

There is no single fixed clearance that applies to every oven. The required clearance depends on the oven's internal construction, airflow, rotating system and technical specifications provided by the oven manufacturer.

How should the number of shelves be determined?

The number of trays used in each production batch, product height, required shelf spacing and total trolley load capacity should be evaluated together.

Does a covered trolley replace a proofing chamber?

No. A covered trolley can help protect dough from direct air movement, but it does not replace a professional proofing chamber that controls temperature and humidity.

Which businesses can use a 40 x 60 cm tray trolley?

It can be used by bakeries, pastry shops, cafes, hotels and small or medium-sized production facilities using 40 x 60 cm trays. Suitability depends on daily production volume and shelf requirements rather than business size alone.

How is oven trolley load capacity calculated?

Multiply the loaded weight of one tray by the number of trays transported at the same time. The resulting total load must remain below the safe capacity of the frame, shelves and wheels.

Can oven trolleys be manufactured in custom dimensions?

Yes. Depending on the manufacturer's technical capabilities, external dimensions, shelf quantity, shelf spacing, tray compatibility and oven connection systems can be customized.

Conclusion

The correct oven trolley should not be selected only according to tray dimensions or shelf quantity. The intended application, oven type, connection system, tray or loader dimensions, shelf spacing, total load, material and wheel system must be evaluated together.

Open tray trolleys, covered trolleys, loader trolleys and rotary oven trolleys are designed for different production requirements. These models are not direct alternatives to one another. Selecting the correct model for the production process supports safer and more efficient equipment use.

EKMAŞ manufactures standard and custom oven trolleys for different tray dimensions, production capacities and oven connection systems. To identify the most suitable configuration for your business, visit the EKMAŞ oven trolleys page or contact our specialist team by calling +90 850 650 00 00.