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- Crosby McKissick '475', '476' & '477' Oilfield Well Logger's Blocks, WLL Range from 1350kg to 9,000kg
- Alloy aluminum housing for maximum strength and minimum weight.
- Conductor cable ONLY is recommended for use with Well Logger’s Blocks.
- For use in high speed well logging, perforating, etc.
- Extra large double row, pre-adjusted sealed tapered bearing.
- Quick opening pin for fast string-up, light weight for easy handling.
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McKissick 475 Floor Block | McKissick 477 Floor Block | McKissick 476 Top Block |
475 & 477 Floor Block Specifications
Sheave Dia. (mm) | Block No. | Floor Block Stock No. | Working Load Limit (t)* | Conductor Cable Size (mm)† | Weight (kg) | Connection |
178 | 475 | 180020 | 1.35 | 5 | 4.5 | Swivel Hanger |
254 | 475 | 180253 | 2.25 | 8 | 9.5 | Swivel Hanger |
305 | 475 | 180440 | 2.25 | 8 | 10.8 | Swivel Hanger |
356 | 475 | 180618 | 2.25 | 8 | 19.5 | Swivel Hanger |
356 | 477 | 169784 | 5.4 | 6 | 26.3 | Swivel Clevis |
508 | 477 | 191072 | 5.4 | 6 | 31.8 | Swivel Clevis |
610 | 477 | 191107 | 9 | 8 | 58.9 | Swivel Clevis |
*Ultimate Load is 4 times the Working Load Limit.
†Other cable sizes available upon request.
476 Top Block Specifications
Sheave Dia. (mm) | Block No. | Top Block Stock No. | Working Load Limit (t)* | Conductor Cable Size (mm) | Weight (kg) | Connection |
178 | 476 | 180075 | 2.25 | 5 | 4.5 | Stinger Pin |
254 | 474 | 180173 | 2.25 | 5 | 4.5 | Stinger Pin |
254 | 476 | 180333 | 3.6 | 8 | 9.5 | Stinger Pin |
305 | 476 | 180529 | 3.6 | 8 | 10.8 | Stinger Pin |
356 | 476 | 180707 | 3.6 | 8 | 19.5 | Stinger Pin |
* Ultimate Load is 4 times the Working Load Limit.
- Alloy aluminum housing for maximum strength and minimum weight.
- Conductor cable ONLY is recommended for use with Well Logger’s Blocks.
- For use in high speed well logging, perforating, etc.
- Extra large double row, pre-adjusted sealed tapered bearing.
- Quick opening pin for fast string-up, light weight for easy handling.
![]() |
![]() |
![]() |
McKissick 475 Floor Block | McKissick 477 Floor Block | McKissick 476 Top Block |
475 & 477 Floor Block Specifications
Sheave Dia. (mm) | Block No. | Floor Block Stock No. | Working Load Limit (t)* | Conductor Cable Size (mm)† | Weight (kg) | Connection |
178 | 475 | 180020 | 1.35 | 5 | 4.5 | Swivel Hanger |
254 | 475 | 180253 | 2.25 | 8 | 9.5 | Swivel Hanger |
305 | 475 | 180440 | 2.25 | 8 | 10.8 | Swivel Hanger |
356 | 475 | 180618 | 2.25 | 8 | 19.5 | Swivel Hanger |
356 | 477 | 169784 | 5.4 | 6 | 26.3 | Swivel Clevis |
508 | 477 | 191072 | 5.4 | 6 | 31.8 | Swivel Clevis |
610 | 477 | 191107 | 9 | 8 | 58.9 | Swivel Clevis |
*Ultimate Load is 4 times the Working Load Limit.
†Other cable sizes available upon request.
476 Top Block Specifications
Sheave Dia. (mm) | Block No. | Top Block Stock No. | Working Load Limit (t)* | Conductor Cable Size (mm) | Weight (kg) | Connection |
178 | 476 | 180075 | 2.25 | 5 | 4.5 | Stinger Pin |
254 | 474 | 180173 | 2.25 | 5 | 4.5 | Stinger Pin |
254 | 476 | 180333 | 3.6 | 8 | 9.5 | Stinger Pin |
305 | 476 | 180529 | 3.6 | 8 | 10.8 | Stinger Pin |
356 | 476 | 180707 | 3.6 | 8 | 19.5 | Stinger Pin |
* Ultimate Load is 4 times the Working Load Limit.
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Regarding: Crosby McKissick '475', '476' & '477' Oilfield Well Logger's Blocks, WLL Range from 1350kg to 9,000kg
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