1. Application
Casters are designed to be intermittently used by humans in order to facilitate transfer of items.
It is also assumed that the product selection will be installed in various indoor and outdoor devices. So please select the product according to the usage conditions, applications and check the correct installation and setting conditions.
2. Optimum caster selection and usage conditions
① Load capacity
The load capacity listed on this website indicates a value (limit) that the object could be easy to move when carried on a flat surface with human power. (excluding casers supporting towing)
Please select the appropriate caster with load capacity according to total load applied on the caster.
However, load may be applied to 3 pieces of casters even though 4 pieces of casters are used; therefore, upper limit of total movable load can be calculated with as following formula commonly which multiplying by 0.8. (Total allowance load is the load including the weight of the trolley.)
Load capacity = 1pc load capacity × 4pcs × 0.8
◎ Expression of power is daN.
1daN=10N≒1.02kgf （1kgf≒9.8N=0.98daN）
② Using speed
Casters shall run on flat floor surface at room temperature, and casters shall be used within the range on the following table. (Do not use casters continuously if heat is generated.)
| Wheel diameter | Using speed |
|---|---|
| 100mm or less | 2km/h or lower |
| 100mm or more | 4km/h or lower |
※ SKY-2 Type casters which for towing, please use at less than 10 km/h.
③ Using conditions
Normally, casters are supposed to be used indoors at room temperature.
Do not use casters in special environment susceptible to high temperature, low temperature, high humidity, acid, alkali, salt content, solvent, oil, sea water, chemicals, etc. It may cause damage to the product.
When used in a special environment, the brackets, wheels and grease etc. may be required for each application. Besides, depending on the material of the floor, it’s possible to be contaminated. (Please contact us in other cases.)
In addition, when temporarily stopping rotation of a caster, please use a stopper.
④ Stopper
Please note that stoppers may be unintentionally released due to deterioration of function and shock which caused by abrasion or damage because of long-term use.
In addition, the braking function of hard-wheel is inferior at the factory. If the braking performance is particularly necessary for product safety, please use the "wheel stopper etc.".
Please do not use casters as follows.
It’s dangerous that the caster damage or personal injury may occur.
Matters that lead to breakage of casters
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- Load shall be applied according to load capacity.
- If load exceeding load capacity is applied, the caster may be damaged, and its performance may be degraded.
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- Do not drop or apply shock to the caster.
- The life of the caster may be shortened, or it may be damaged.
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- Do not move the caster forcibly while the stopper is applied.
- The stopper part may be damaged.
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- For fixed wheel, do not apply excessive force at right rotation angle of a wheel.
- The bracket may be deformed, and performance of the caster may be degraded.
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- Do not strike the stopper part with a hammer or step on the stopper part hardly.
- The stopper part may be damaged.
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- Do not use caster on significantly uneven surface.
- The life of the caster may be shortened.
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- Do not use the caster under special environment susceptible to high temperature, low temperature and high humidity, etc.
- Breakage or performance degradation of the caster may occur.
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- When mounting the screw-in type caster, be sure to tighten the caster at the hexagonal part on the stem using a wrench.
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- Do not use for towing by power.
- The caster may be damaged, and it may cause accident or injury.(Excluding towing casters.)
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- Do not leave the caster while the stopper is applied on an inclined surface.
- Leaving casters on an inclined surface since casters may start moving suddenly. Breakage or performance degradation of casters may occur.
Matters that lead to personal injury
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- Be sure to avoid eccentric loading.
- It’s very dangerous as it may cause you to lose balance or fall.
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- Please do not ride on a trolley equipped with casters.
- It’s very dangerous that the injury or casualty events may occur.
4. Precautions for use
- Depending on usage conditions and environment, tire mark may remain on the floor.
- Do not apply load exceeding load capacity.
- Be sure to load the individual wheels evenly.
- For fixed caster, do not apply excessive fore at right rotation angle of a wheel.
- Do not use casters in such a manner that impact is applied.
(Impact such as climbing over the stepped surface, falling down, poking into the fork of a forklift, etc.) - Do not use casters on significantly uneven surface.
- Do not tow casters by use of a trailer, etc.
※ Excluding casters supporting towing. - Be sure to wear shoes when operating the stopper.
- Do not move the caster forcibly while the stopper is applied.
- Do not apply excessive force and strong impact on the stopper.
- Do not leave the caster while the stopper is applied on an inclined surface. In the case of leaving the caster on the inclined surface, use the wheel stopper.
- Do not operate the stopper while the caster is moving.
- Be sure to check that the stopper is released when moving the caster.
- Do not modify casters.
※ We assume no responsibility whatsoever for any accidents or failure resulting from modification. - If a person, such as a chair, is used to sit on or ride, please contact our service center.
5. Inspection, maintenance and replacement
- ①Perform inspection and maintenance regularly in order to prevent accident and use a caster for a lengthy period.Please use gloves when you do maintenance(included regularly check and cleaning). You may get injured if you do it by bare hands.
- ②Please check the following items regularly.
- Is there any abnormality in the tightening part of the caster?
- Is there any breakage, crack and deformation of the caster?
- Is there any looseness of axle?
- ③If products have defects, such as deterioration and breakage, replace defective products immediately. (Do not only replace part of products.)
- ④If the turning parts or wheel portion catches foreign substance, remove the substance immediately. Otherwise, poor rotating movement may occur.
