[THK] — KR46 LM Guide Actuator, Motor In-line (Series), Short Block C/D
LM Guide Actuators THK

[THK] — KR46 LM Guide Actuator, Motor In-line (Series), Short Block C/D

Family ID: THK-KR46-SERIAL-CD

THK KR46 LM Guide Actuator, motor in-line (series) configuration. Available with or without cover. Short block ×1 (C-type) or ×2 (D-type). Integrated LM block and ball screw nut for compact design. Equal load capacity in 4 directions. Stroke range: 220–820 mm (C-type), 150–750 mm (D-type). See model number configuration guide A2-136.

28 product codes available in this family

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Product Codes & Specifications

Product Code Description Brand Spec
KR4620C-0220 KR46 No Cover In-line, Short Block×1, Stroke 220mm THK Model: KR46, Short Block ×1 (C-type) | Cover: No Cover | Motor Mounting: In-line (Series) | Cover Code: 20 (estimated ⚠️) | Stroke: 220 mm | Outer Rail Length: 340 mm | Overall Length L1: 440.5 mm | C: 200 mm | Mass: 6.2 kg
KR4620C-0320 KR46 No Cover In-line, Short Block×1, Stroke 320mm THK Model: KR46, Short Block ×1 (C-type) | Cover: No Cover | Motor Mounting: In-line (Series) | Cover Code: 20 (estimated ⚠️) | Stroke: 320 mm | Outer Rail Length: 440 mm | Overall Length L1: 540.5 mm | C: 300 mm | Mass: 7.6 kg
KR4620C-0420 KR46 No Cover In-line, Short Block×1, Stroke 420mm THK Model: KR46, Short Block ×1 (C-type) | Cover: No Cover | Motor Mounting: In-line (Series) | Cover Code: 20 (estimated ⚠️) | Stroke: 420 mm | Outer Rail Length: 540 mm | Overall Length L1: 640.5 mm | C: 400 mm | Mass: 9.0 kg
KR4620C-0520 KR46 No Cover In-line, Short Block×1, Stroke 520mm THK Model: KR46, Short Block ×1 (C-type) | Cover: No Cover | Motor Mounting: In-line (Series) | Cover Code: 20 (estimated ⚠️) | Stroke: 520 mm | Outer Rail Length: 640 mm | Overall Length L1: 740.5 mm | C: 500 mm | Mass: 10.4 kg
KR4620C-0620 KR46 No Cover In-line, Short Block×1, Stroke 620mm THK Model: KR46, Short Block ×1 (C-type) | Cover: No Cover | Motor Mounting: In-line (Series) | Cover Code: 20 (estimated ⚠️) | Stroke: 620 mm | Outer Rail Length: 740 mm | Overall Length L1: 840.5 mm | C: 600 mm | Mass: 11.8 kg
KR4620C-0720 KR46 No Cover In-line, Short Block×1, Stroke 720mm THK Model: KR46, Short Block ×1 (C-type) | Cover: No Cover | Motor Mounting: In-line (Series) | Cover Code: 20 (estimated ⚠️) | Stroke: 720 mm | Outer Rail Length: 840 mm | Overall Length L1: 940.5 mm | C: 700 mm | Mass: 13.2 kg
KR4620C-0820 KR46 No Cover In-line, Short Block×1, Stroke 820mm THK Model: KR46, Short Block ×1 (C-type) | Cover: No Cover | Motor Mounting: In-line (Series) | Cover Code: 20 (estimated ⚠️) | Stroke: 820 mm | Outer Rail Length: 940 mm | Overall Length L1: 1040.5 mm | C: 800 mm | Mass: 14.6 kg
KR4620D-0150 KR46 No Cover In-line, Short Block×2, Stroke 150mm THK Model: KR46, Short Block ×2 (D-type) | Cover: No Cover | Motor Mounting: In-line (Series) | Cover Code: 20 (estimated ⚠️) | Stroke: 150 mm | Outer Rail Length: 340 mm | Overall Length L1: 440.5 mm | C: 200 mm | Mass: 6.8 kg
KR4620D-0250 KR46 No Cover In-line, Short Block×2, Stroke 250mm THK Model: KR46, Short Block ×2 (D-type) | Cover: No Cover | Motor Mounting: In-line (Series) | Cover Code: 20 (estimated ⚠️) | Stroke: 250 mm | Outer Rail Length: 440 mm | Overall Length L1: 540.5 mm | C: 300 mm | Mass: 8.2 kg
KR4620D-0350 KR46 No Cover In-line, Short Block×2, Stroke 350mm THK Model: KR46, Short Block ×2 (D-type) | Cover: No Cover | Motor Mounting: In-line (Series) | Cover Code: 20 (estimated ⚠️) | Stroke: 350 mm | Outer Rail Length: 540 mm | Overall Length L1: 640.5 mm | C: 400 mm | Mass: 9.6 kg
KR4620D-0450 KR46 No Cover In-line, Short Block×2, Stroke 450mm THK Model: KR46, Short Block ×2 (D-type) | Cover: No Cover | Motor Mounting: In-line (Series) | Cover Code: 20 (estimated ⚠️) | Stroke: 450 mm | Outer Rail Length: 640 mm | Overall Length L1: 740.5 mm | C: 500 mm | Mass: 11.0 kg
KR4620D-0550 KR46 No Cover In-line, Short Block×2, Stroke 550mm THK Model: KR46, Short Block ×2 (D-type) | Cover: No Cover | Motor Mounting: In-line (Series) | Cover Code: 20 (estimated ⚠️) | Stroke: 550 mm | Outer Rail Length: 740 mm | Overall Length L1: 840.5 mm | C: 600 mm | Mass: 12.4 kg
KR4620D-0650 KR46 No Cover In-line, Short Block×2, Stroke 650mm THK Model: KR46, Short Block ×2 (D-type) | Cover: No Cover | Motor Mounting: In-line (Series) | Cover Code: 20 (estimated ⚠️) | Stroke: 650 mm | Outer Rail Length: 840 mm | Overall Length L1: 940.5 mm | C: 700 mm | Mass: 13.8 kg
KR4620D-0750 KR46 No Cover In-line, Short Block×2, Stroke 750mm THK Model: KR46, Short Block ×2 (D-type) | Cover: No Cover | Motor Mounting: In-line (Series) | Cover Code: 20 (estimated ⚠️) | Stroke: 750 mm | Outer Rail Length: 940 mm | Overall Length L1: 1040.5 mm | C: 800 mm | Mass: 15.2 kg
KR4621C-0220 KR46 With Cover In-line, Short Block×1, Stroke 220mm THK Model: KR46, Short Block ×1 (C-type) | Cover: With Cover | Motor Mounting: In-line (Series) | Cover Code: 21 (estimated ⚠️) | Stroke: 220 mm | Outer Rail Length: 340 mm | Overall Length L1: 440.5 mm | C: 200 mm | Mass: 6.9 kg
KR4621C-0320 KR46 With Cover In-line, Short Block×1, Stroke 320mm THK Model: KR46, Short Block ×1 (C-type) | Cover: With Cover | Motor Mounting: In-line (Series) | Cover Code: 21 (estimated ⚠️) | Stroke: 320 mm | Outer Rail Length: 440 mm | Overall Length L1: 540.5 mm | C: 300 mm | Mass: 8.4 kg
KR4621C-0420 KR46 With Cover In-line, Short Block×1, Stroke 420mm THK Model: KR46, Short Block ×1 (C-type) | Cover: With Cover | Motor Mounting: In-line (Series) | Cover Code: 21 (estimated ⚠️) | Stroke: 420 mm | Outer Rail Length: 540 mm | Overall Length L1: 640.5 mm | C: 400 mm | Mass: 9.9 kg
KR4621C-0520 KR46 With Cover In-line, Short Block×1, Stroke 520mm THK Model: KR46, Short Block ×1 (C-type) | Cover: With Cover | Motor Mounting: In-line (Series) | Cover Code: 21 (estimated ⚠️) | Stroke: 520 mm | Outer Rail Length: 640 mm | Overall Length L1: 740.5 mm | C: 500 mm | Mass: 11.4 kg
KR4621C-0620 KR46 With Cover In-line, Short Block×1, Stroke 620mm THK Model: KR46, Short Block ×1 (C-type) | Cover: With Cover | Motor Mounting: In-line (Series) | Cover Code: 21 (estimated ⚠️) | Stroke: 620 mm | Outer Rail Length: 740 mm | Overall Length L1: 840.5 mm | C: 600 mm | Mass: 12.9 kg
KR4621C-0720 KR46 With Cover In-line, Short Block×1, Stroke 720mm THK Model: KR46, Short Block ×1 (C-type) | Cover: With Cover | Motor Mounting: In-line (Series) | Cover Code: 21 (estimated ⚠️) | Stroke: 720 mm | Outer Rail Length: 840 mm | Overall Length L1: 940.5 mm | C: 700 mm | Mass: 14.3 kg
KR4621C-0820 KR46 With Cover In-line, Short Block×1, Stroke 820mm THK Model: KR46, Short Block ×1 (C-type) | Cover: With Cover | Motor Mounting: In-line (Series) | Cover Code: 21 (estimated ⚠️) | Stroke: 820 mm | Outer Rail Length: 940 mm | Overall Length L1: 1040.5 mm | C: 800 mm | Mass: 15.8 kg
KR4621D-0150 KR46 With Cover In-line, Short Block×2, Stroke 150mm THK Model: KR46, Short Block ×2 (D-type) | Cover: With Cover | Motor Mounting: In-line (Series) | Cover Code: 21 (estimated ⚠️) | Stroke: 150 mm | Outer Rail Length: 340 mm | Overall Length L1: 440.5 mm | C: 200 mm | Mass: 7.7 kg
KR4621D-0250 KR46 With Cover In-line, Short Block×2, Stroke 250mm THK Model: KR46, Short Block ×2 (D-type) | Cover: With Cover | Motor Mounting: In-line (Series) | Cover Code: 21 (estimated ⚠️) | Stroke: 250 mm | Outer Rail Length: 440 mm | Overall Length L1: 540.5 mm | C: 300 mm | Mass: 9.2 kg
KR4621D-0350 KR46 With Cover In-line, Short Block×2, Stroke 350mm THK Model: KR46, Short Block ×2 (D-type) | Cover: With Cover | Motor Mounting: In-line (Series) | Cover Code: 21 (estimated ⚠️) | Stroke: 350 mm | Outer Rail Length: 540 mm | Overall Length L1: 640.5 mm | C: 400 mm | Mass: 10.7 kg
KR4621D-0450 KR46 With Cover In-line, Short Block×2, Stroke 450mm THK Model: KR46, Short Block ×2 (D-type) | Cover: With Cover | Motor Mounting: In-line (Series) | Cover Code: 21 (estimated ⚠️) | Stroke: 450 mm | Outer Rail Length: 640 mm | Overall Length L1: 740.5 mm | C: 500 mm | Mass: 12.2 kg
KR4621D-0550 KR46 With Cover In-line, Short Block×2, Stroke 550mm THK Model: KR46, Short Block ×2 (D-type) | Cover: With Cover | Motor Mounting: In-line (Series) | Cover Code: 21 (estimated ⚠️) | Stroke: 550 mm | Outer Rail Length: 740 mm | Overall Length L1: 840.5 mm | C: 600 mm | Mass: 13.7 kg
KR4621D-0650 KR46 With Cover In-line, Short Block×2, Stroke 650mm THK Model: KR46, Short Block ×2 (D-type) | Cover: With Cover | Motor Mounting: In-line (Series) | Cover Code: 21 (estimated ⚠️) | Stroke: 650 mm | Outer Rail Length: 840 mm | Overall Length L1: 940.5 mm | C: 700 mm | Mass: 15.1 kg
KR4621D-0750 KR46 With Cover In-line, Short Block×2, Stroke 750mm THK Model: KR46, Short Block ×2 (D-type) | Cover: With Cover | Motor Mounting: In-line (Series) | Cover Code: 21 (estimated ⚠️) | Stroke: 750 mm | Outer Rail Length: 940 mm | Overall Length L1: 1040.5 mm | C: 800 mm | Mass: 16.6 kg

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