Overview
The Cincinnati 8100 calculating time clock is a mechanical time recording device engineered for employee punch-clock timekeeping and payroll administration. Built on the proven Amano MJR7000 platform, the Cincinnati 8100 delivers straightforward mechanical operation without electronic complexity. This discontinued model remains available as used inventory and is prized by organizations seeking reliable, low-maintenance time-tracking hardware for small to mid-sized workforces.
Key Features
- Mechanical calculating time clock with punch-card time recording
- Automatic timestamp printing on standard time cards
- Durable metal housing for long-term workplace use
- Simple dial and lever controls for easy operation
- Requires no electrical power—mechanical operation only
- Compatible with standard A1181-series time cards (3¼″ × 7⅜″)
Technical Specifications
- Type: Mechanical calculating time recorder
- Operation: Manual punch-card entry with automatic timestamp
- Time Card Format: A1181 series (3¼″ wide × 7⅜″ long)
- Card Capacity: Supports multiple time cards per day
- Power Requirement: None—fully mechanical
- Manufacturer: Amano (Cincinnati-branded model)
- Base Model: MJR7000EZ
- Status: Discontinued
- Condition: Used, fully functional
Typical Applications
- Small to mid-sized business payroll time tracking
- Manufacturing and warehouse employee timekeeping
- Office and retail staff attendance recording
- Non-networked, independent workplace timekeeping
- Backup or supplementary time-recording system
Compatibility & Replacements
Compatible With
- A1181-series time cards (standard punch-card format)
- Amano MJR7000EZ and MJR8000 time card supplies
- Standard office or workplace environments with 12 or 24-hour operation
- Any payroll system using manual time-card data entry
Replaces / Drop-In Replacement For
- Older Cincinnati time clock models with identical time-card format
- Amano MJR7000 systems (same base platform and card compatibility)
- Olympic 8100 time clock (compatible card system)
Works With
- Manual payroll ledgers and timesheet systems
- Standalone timekeeping environments (no software integration)
- A1181 time cards and all compatible punch-card supplies
- Any mechanical timekeeping accessory or card-filing system




