![[THK] — KR33 LM Guide Actuator, Motor Parallel, Block A/B](https://prosourcemro.com/wp-content/uploads/2026/05/001-932-1024x769.png)
[THK] — KR33 LM Guide Actuator, Motor Parallel, Block A/B
Family ID: THK-KR33-PARALLEL-AB
THK KR33 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: 50–600 mm (A-type), 125–525 mm (B-type). See model number configuration guide A2-136.
24 product codes available in this family
Product Codes & Specifications
| Product Code | Description | Brand | Spec | ||
|---|---|---|---|---|---|
| KR3330A-0050 | KR33 No Cover Parallel, Block×1, Stroke 50mm | THK | Model: KR33, Long Block ×1 (A-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 50 mm | Outer Rail Length: 150 mm | Overall Length L1: 210 mm | C: 100 mm | G: 25 mm | Mass: 2.2 kg | ||
| KR3330A-0100 | KR33 No Cover Parallel, Block×1, Stroke 100mm | THK | Model: KR33, Long Block ×1 (A-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 100 mm | Outer Rail Length: 200 mm | Overall Length L1: 260 mm | C: 100 mm | G: 50 mm | Mass: 2.6 kg | ||
| KR3330A-0200 | KR33 No Cover Parallel, Block×1, Stroke 200mm | THK | Model: KR33, Long Block ×1 (A-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 200 mm | Outer Rail Length: 300 mm | Overall Length L1: 360 mm | C: 200 mm | G: 50 mm | Mass: 3.3 kg | ||
| KR3330A-0300 | KR33 No Cover Parallel, Block×1, Stroke 300mm | THK | Model: KR33, Long Block ×1 (A-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 300 mm | Outer Rail Length: 400 mm | Overall Length L1: 460 mm | C: 300 mm | G: 50 mm | Mass: 4.0 kg | ||
| KR3330A-0400 | KR33 No Cover Parallel, Block×1, Stroke 400mm | THK | Model: KR33, Long Block ×1 (A-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 400 mm | Outer Rail Length: 500 mm | Overall Length L1: 560 mm | C: 400 mm | G: 50 mm | Mass: 4.7 kg | ||
| KR3330A-0500 | KR33 No Cover Parallel, Block×1, Stroke 500mm | THK | Model: KR33, Long Block ×1 (A-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 500 mm | Outer Rail Length: 600 mm | Overall Length L1: 660 mm | C: 500 mm | G: 50 mm | Mass: 5.5 kg | ||
| KR3330A-0600 | KR33 No Cover Parallel, Block×1, Stroke 600mm | THK | Model: KR33, Long Block ×1 (A-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 600 mm | Outer Rail Length: 700 mm | Overall Length L1: 760 mm | C: 600 mm | G: 50 mm | Mass: 6.2 kg | ||
| KR3330B-0125 | KR33 No Cover Parallel, Block×2, Stroke 125mm | THK | Model: KR33, Long Block ×2 (B-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 125 mm | Outer Rail Length: 300 mm | Overall Length L1: 360 mm | C: 200 mm | G: 50 mm | Mass: 3.7 kg | ||
| KR3330B-0225 | KR33 No Cover Parallel, Block×2, Stroke 225mm | THK | Model: KR33, Long Block ×2 (B-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 225 mm | Outer Rail Length: 400 mm | Overall Length L1: 460 mm | C: 300 mm | G: 50 mm | Mass: 4.4 kg | ||
| KR3330B-0325 | KR33 No Cover Parallel, Block×2, Stroke 325mm | THK | Model: KR33, Long Block ×2 (B-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 325 mm | Outer Rail Length: 500 mm | Overall Length L1: 560 mm | C: 400 mm | G: 50 mm | Mass: 5.1 kg | ||
| KR3330B-0425 | KR33 No Cover Parallel, Block×2, Stroke 425mm | THK | Model: KR33, Long Block ×2 (B-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 425 mm | Outer Rail Length: 600 mm | Overall Length L1: 660 mm | C: 500 mm | G: 50 mm | Mass: 5.9 kg | ||
| KR3330B-0525 | KR33 No Cover Parallel, Block×2, Stroke 525mm | THK | Model: KR33, Long Block ×2 (B-type) | Cover: No Cover | Motor Mounting: Parallel | Cover Code: 30 (estimated ⚠️) | Stroke: 525 mm | Outer Rail Length: 700 mm | Overall Length L1: 760 mm | C: 600 mm | G: 50 mm | Mass: 6.6 kg | ||
| KR3331A-0050 | KR33 With Cover Parallel, Block×1, Stroke 50mm | THK | Model: KR33, Long Block ×1 (A-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 50 mm | Outer Rail Length: 150 mm | Overall Length L1: 210 mm | C: 100 mm | G: 25 mm | Mass: 2.5 kg | ||
| KR3331A-0100 | KR33 With Cover Parallel, Block×1, Stroke 100mm | THK | Model: KR33, Long Block ×1 (A-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 100 mm | Outer Rail Length: 200 mm | Overall Length L1: 260 mm | C: 100 mm | G: 50 mm | Mass: 2.9 kg | ||
| KR3331A-0200 | KR33 With Cover Parallel, Block×1, Stroke 200mm | THK | Model: KR33, Long Block ×1 (A-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 200 mm | Outer Rail Length: 300 mm | Overall Length L1: 360 mm | C: 200 mm | G: 50 mm | Mass: 3.6 kg | ||
| KR3331A-0300 | KR33 With Cover Parallel, Block×1, Stroke 300mm | THK | Model: KR33, Long Block ×1 (A-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 300 mm | Outer Rail Length: 400 mm | Overall Length L1: 460 mm | C: 300 mm | G: 50 mm | Mass: 4.4 kg | ||
| KR3331A-0400 | KR33 With Cover Parallel, Block×1, Stroke 400mm | THK | Model: KR33, Long Block ×1 (A-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 400 mm | Outer Rail Length: 500 mm | Overall Length L1: 560 mm | C: 400 mm | G: 50 mm | Mass: 5.2 kg | ||
| KR3331A-0500 | KR33 With Cover Parallel, Block×1, Stroke 500mm | THK | Model: KR33, Long Block ×1 (A-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 500 mm | Outer Rail Length: 600 mm | Overall Length L1: 660 mm | C: 500 mm | G: 50 mm | Mass: 5.9 kg | ||
| KR3331A-0600 | KR33 With Cover Parallel, Block×1, Stroke 600mm | THK | Model: KR33, Long Block ×1 (A-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 600 mm | Outer Rail Length: 700 mm | Overall Length L1: 760 mm | C: 600 mm | G: 50 mm | Mass: 6.7 kg | ||
| KR3331B-0125 | KR33 With Cover Parallel, Block×2, Stroke 125mm | THK | Model: KR33, Long Block ×2 (B-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 125 mm | Outer Rail Length: 300 mm | Overall Length L1: 360 mm | C: 200 mm | G: 50 mm | Mass: 4.2 kg | ||
| KR3331B-0225 | KR33 With Cover Parallel, Block×2, Stroke 225mm | THK | Model: KR33, Long Block ×2 (B-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 225 mm | Outer Rail Length: 400 mm | Overall Length L1: 460 mm | C: 300 mm | G: 50 mm | Mass: 5.0 kg | ||
| KR3331B-0325 | KR33 With Cover Parallel, Block×2, Stroke 325mm | THK | Model: KR33, Long Block ×2 (B-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 325 mm | Outer Rail Length: 500 mm | Overall Length L1: 560 mm | C: 400 mm | G: 50 mm | Mass: 5.8 kg | ||
| KR3331B-0425 | KR33 With Cover Parallel, Block×2, Stroke 425mm | THK | Model: KR33, Long Block ×2 (B-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 425 mm | Outer Rail Length: 600 mm | Overall Length L1: 660 mm | C: 500 mm | G: 50 mm | Mass: 6.5 kg | ||
| KR3331B-0525 | KR33 With Cover Parallel, Block×2, Stroke 525mm | THK | Model: KR33, Long Block ×2 (B-type) | Cover: With Cover | Motor Mounting: Parallel | Cover Code: 31 (estimated ⚠️) | Stroke: 525 mm | Outer Rail Length: 700 mm | Overall Length L1: 760 mm | C: 600 mm | G: 50 mm | Mass: 7.3 kg |
