![[THK] — KR46 LM Guide Actuator, Motor Parallel, Block A/B](https://prosourcemro.com/wp-content/uploads/2026/05/001-940-1024x769.png)
[THK] — KR46 LM Guide Actuator, Motor Parallel, Block A/B
Family ID: THK-KR46-PARALLEL-AB
THK KR46 LM Guide Actuator, motor parallel configuration. Available with or without cover. Long block ×1 (A-type) or ×2 (B-type). Integrated LM block and ball screw nut for compact design. Equal load capacity in 4 directions. Stroke range: 190–790 mm (A-type), 80–680 mm (B-type). See model number configuration guide A2-136.
28 product codes available in this family
Product Codes & Specifications
| Product Code | Description | Brand | Spec | ||
|---|---|---|---|---|---|
| KR4630A-0190 | KR46 No Cover Parallel, Block×1, Stroke 190mm | THK | Model: KR46, Long Block ×1 (A-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 190 mm | Outer Rail Length: 340 mm | Overall Length L1: 417 mm | C: 200 mm | Mass: 7.6 kg | ||
| KR4630A-0290 | KR46 No Cover Parallel, Block×1, Stroke 290mm | THK | Model: KR46, Long Block ×1 (A-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 290 mm | Outer Rail Length: 440 mm | Overall Length L1: 517 mm | C: 300 mm | Mass: 9.0 kg | ||
| KR4630A-0390 | KR46 No Cover Parallel, Block×1, Stroke 390mm | THK | Model: KR46, Long Block ×1 (A-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 390 mm | Outer Rail Length: 540 mm | Overall Length L1: 617 mm | C: 400 mm | Mass: 10.4 kg | ||
| KR4630A-0490 | KR46 No Cover Parallel, Block×1, Stroke 490mm | THK | Model: KR46, Long Block ×1 (A-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 490 mm | Outer Rail Length: 640 mm | Overall Length L1: 717 mm | C: 500 mm | Mass: 11.8 kg | ||
| KR4630A-0590 | KR46 No Cover Parallel, Block×1, Stroke 590mm | THK | Model: KR46, Long Block ×1 (A-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 590 mm | Outer Rail Length: 740 mm | Overall Length L1: 817 mm | C: 600 mm | Mass: 13.2 kg | ||
| KR4630A-0690 | KR46 No Cover Parallel, Block×1, Stroke 690mm | THK | Model: KR46, Long Block ×1 (A-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 690 mm | Outer Rail Length: 840 mm | Overall Length L1: 917 mm | C: 700 mm | Mass: 14.6 kg | ||
| KR4630A-0790 | KR46 No Cover Parallel, Block×1, Stroke 790mm | THK | Model: KR46, Long Block ×1 (A-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 790 mm | Outer Rail Length: 940 mm | Overall Length L1: 1017 mm | C: 800 mm | Mass: 16.0 kg | ||
| KR4630B-0080 | KR46 No Cover Parallel, Block×2, Stroke 80mm | THK | Model: KR46, Long Block ×2 (B-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 80 mm | Outer Rail Length: 340 mm | Overall Length L1: 417 mm | C: 200 mm | Mass: 8.6 kg | ||
| KR4630B-0180 | KR46 No Cover Parallel, Block×2, Stroke 180mm | THK | Model: KR46, Long Block ×2 (B-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 180 mm | Outer Rail Length: 440 mm | Overall Length L1: 517 mm | C: 300 mm | Mass: 10.0 kg | ||
| KR4630B-0280 | KR46 No Cover Parallel, Block×2, Stroke 280mm | THK | Model: KR46, Long Block ×2 (B-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 280 mm | Outer Rail Length: 540 mm | Overall Length L1: 617 mm | C: 400 mm | Mass: 11.4 kg | ||
| KR4630B-0380 | KR46 No Cover Parallel, Block×2, Stroke 380mm | THK | Model: KR46, Long Block ×2 (B-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 380 mm | Outer Rail Length: 640 mm | Overall Length L1: 717 mm | C: 500 mm | Mass: 12.8 kg | ||
| KR4630B-0480 | KR46 No Cover Parallel, Block×2, Stroke 480mm | THK | Model: KR46, Long Block ×2 (B-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 480 mm | Outer Rail Length: 740 mm | Overall Length L1: 817 mm | C: 600 mm | Mass: 14.2 kg | ||
| KR4630B-0580 | KR46 No Cover Parallel, Block×2, Stroke 580mm | THK | Model: KR46, Long Block ×2 (B-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 580 mm | Outer Rail Length: 840 mm | Overall Length L1: 917 mm | C: 700 mm | Mass: 15.6 kg | ||
| KR4630B-0680 | KR46 No Cover Parallel, Block×2, Stroke 680mm | THK | Model: KR46, Long Block ×2 (B-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 680 mm | Outer Rail Length: 940 mm | Overall Length L1: 1017 mm | C: 800 mm | Mass: 17.0 kg | ||
| KR4631A-0190 | KR46 With Cover Parallel, Block×1, Stroke 190mm | THK | Model: KR46, Long Block ×1 (A-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 190 mm | Outer Rail Length: 340 mm | Overall Length L1: 417 mm | C: 200 mm | Mass: 8.6 kg | ||
| KR4631A-0290 | KR46 With Cover Parallel, Block×1, Stroke 290mm | THK | Model: KR46, Long Block ×1 (A-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 290 mm | Outer Rail Length: 440 mm | Overall Length L1: 517 mm | C: 300 mm | Mass: 10.0 kg | ||
| KR4631A-0390 | KR46 With Cover Parallel, Block×1, Stroke 390mm | THK | Model: KR46, Long Block ×1 (A-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 390 mm | Outer Rail Length: 540 mm | Overall Length L1: 617 mm | C: 400 mm | Mass: 11.5 kg | ||
| KR4631A-0490 | KR46 With Cover Parallel, Block×1, Stroke 490mm | THK | Model: KR46, Long Block ×1 (A-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 490 mm | Outer Rail Length: 640 mm | Overall Length L1: 717 mm | C: 500 mm | Mass: 13.0 kg | ||
| KR4631A-0590 | KR46 With Cover Parallel, Block×1, Stroke 590mm | THK | Model: KR46, Long Block ×1 (A-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 590 mm | Outer Rail Length: 740 mm | Overall Length L1: 817 mm | C: 600 mm | Mass: 14.5 kg | ||
| KR4631A-0690 | KR46 With Cover Parallel, Block×1, Stroke 690mm | THK | Model: KR46, Long Block ×1 (A-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 690 mm | Outer Rail Length: 840 mm | Overall Length L1: 917 mm | C: 700 mm | Mass: 16.0 kg | ||
| KR4631A-0790 | KR46 With Cover Parallel, Block×1, Stroke 790mm | THK | Model: KR46, Long Block ×1 (A-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 790 mm | Outer Rail Length: 940 mm | Overall Length L1: 1017 mm | C: 800 mm | Mass: 17.4 kg | ||
| KR4631B-0080 | KR46 With Cover Parallel, Block×2, Stroke 80mm | THK | Model: KR46, Long Block ×2 (B-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 80 mm | Outer Rail Length: 340 mm | Overall Length L1: 417 mm | C: 200 mm | Mass: 10.0 kg | ||
| KR4631B-0180 | KR46 With Cover Parallel, Block×2, Stroke 180mm | THK | Model: KR46, Long Block ×2 (B-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 180 mm | Outer Rail Length: 440 mm | Overall Length L1: 517 mm | C: 300 mm | Mass: 11.4 kg | ||
| KR4631B-0280 | KR46 With Cover Parallel, Block×2, Stroke 280mm | THK | Model: KR46, Long Block ×2 (B-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 280 mm | Outer Rail Length: 540 mm | Overall Length L1: 617 mm | C: 400 mm | Mass: 12.9 kg | ||
| KR4631B-0380 | KR46 With Cover Parallel, Block×2, Stroke 380mm | THK | Model: KR46, Long Block ×2 (B-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 380 mm | Outer Rail Length: 640 mm | Overall Length L1: 717 mm | C: 500 mm | Mass: 14.4 kg | ||
| KR4631B-0480 | KR46 With Cover Parallel, Block×2, Stroke 480mm | THK | Model: KR46, Long Block ×2 (B-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 480 mm | Outer Rail Length: 740 mm | Overall Length L1: 817 mm | C: 600 mm | Mass: 15.9 kg | ||
| KR4631B-0580 | KR46 With Cover Parallel, Block×2, Stroke 580mm | THK | Model: KR46, Long Block ×2 (B-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 580 mm | Outer Rail Length: 840 mm | Overall Length L1: 917 mm | C: 700 mm | Mass: 17.4 kg | ||
| KR4631B-0680 | KR46 With Cover Parallel, Block×2, Stroke 680mm | THK | Model: KR46, Long Block ×2 (B-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 680 mm | Outer Rail Length: 940 mm | Overall Length L1: 1017 mm | C: 800 mm | Mass: 18.8 kg |
