Jaw Crushers for first stage, primary rock crushing Parker Plant. Jaw crushers are used mainly in first stage, primary crushing applications and are ideal ... Parker have been engineering rock crushers for over 100 years and today thousands of ... 900 x 600. 560. 15,000. 6 SPC. 90. 7090. 75105. 90130. 110170 ... 800 x 480. 435. 10,260. 4 SPC. 55.