Tennis Ball Products

The tennis ball is white or yellow. It is made of rubber. The outer layer is a seamless, seamless blend of wool and nylon. It is round and elastic. The ball has a diameter of 6.35 to 6.67 cm and a weight of 56.7 to 58.47 g. The elastic force of the ball, if it falls freely from the height of 2.54 meters, can bounce from 1.346 to 1.473 meters on the concrete floor. At a temperature of 20 ° C, if the earth is pressurized 8.165 kg, the ball should sink 0.6 to 0.74 cm.

Tennis balls are divided into training balls and game balls. The difference between a tennis training ball and a regular tennis ball is the difference in quality, texture ，and weight.

The difference between the training ball and the game ball

Tennis training balls and game balls have certain differences in terms of hitting, rotation, and speed. First of all, the training ball and the game ball have different air pressures in the ball. The two balls are pinched by hand. The training ball is small, and the ball is biased by hand. Because of its small air pressure, Therefore, when the ball falls, the ball’s bounce force is less, the ball speed is slower, and the impact of the impact racquet is not so large, which is not easy for beginners to cause hand injury. The pressure of the ball in the game is relatively large, so when the ball falls, the bounce force of the ball is large, the ball speed is fast, and the impact of the impact racket is larger than that of the training ball. It is easy for the beginner to cause hand injury, and the training is in use. When the ball is used for the game, use the old game ball for an excessive period. Don’t use the new game ball at once. Secondly, the force is different. Because of the above reasons for the two balls (ie, the reason for the air pressure), when playing the ball, the force is not the same. The training ball has less air pressure and fine jumping power, so it takes a lot of force to play from time to time. The ball used for the game has a large air pressure and a good jumping ability. The ball bounces higher after the ball is grounded, and the speed is fast. It is more difficult to control the ball than the training ball, and the force is relatively less. Especially if you want to play the rotating ball, the training ball is not enough, and the friction of the racquet is less, so the ball that is played out is not very rotating, and there is no speed. The ball is used in the game, the impact of the ball on the racket is large, the speed is fast, and the friction of the ball against the racket is likely to cause a change to the point. These are all things that need to be mastered during practice.

The training ball is generally pressureless, that is, the tennis ball is relatively soft, the internal air pressure is low, and when the ball is practiced, the ball speed is slower and the bounce is lower, which is beneficial for beginners to practice and master the hitting skills.

In order to maintain the internal pressure of the tennis ball, the game ball is pressurized by the can, the tank body is very hard, and there is a pressure of venting when opening. The game ball is flexible, can hit faster sphericity, can also hit a more powerful top or bottom spin and a higher serve speed, providing more intense competition for the tennis game.