diff --git a/app/main/cron/abstractcron.php b/app/main/cron/abstractcron.php
new file mode 100644
index 000000000..04b4076da
--- /dev/null
+++ b/app/main/cron/abstractcron.php
@@ -0,0 +1,27 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: exodu
+ * Date: 17.06.2018
+ * Time: 12:13
+ */
+
+namespace cron;
+
+abstract class AbstractCron {
+
+    // default max_execution_time for cronJobs
+    // -> should be less then execution period
+    const DEFAULT_MAX_EXECUTION_TIME = 50;
+
+    /**
+     * set max execution time for cronjobs
+     * -> Default CLI execution time is "0"  -> infinite!
+     * php.ini settings are ignored! http://php.net/manual/en/info.configuration.php#ini.max-execution-time
+     * @param int $time
+     */
+    protected function setMaxExecutionTime(int $time = self::DEFAULT_MAX_EXECUTION_TIME){
+        ini_set('max_execution_time', $time);
+    }
+
+}
\ No newline at end of file
diff --git a/app/main/cron/cache.php b/app/main/cron/cache.php
index 63832068a..2afbe1f8a 100644
--- a/app/main/cron/cache.php
+++ b/app/main/cron/cache.php
@@ -10,7 +10,7 @@
 
 use data\filesystem\Search;
 
-class Cache {
+class Cache extends AbstractCron {
 
     const LOG_TEXT                          = '%s [%\'_10s] files, size [%\'_10s] byte, not writable [%\'_10s] files, errors [%\'_10s], exec (%.3Fs)';
 
@@ -34,6 +34,7 @@ protected function getExpireMaxTime(\Base $f3): int {
      * @param \Base $f3
      */
     function deleteExpiredData(\Base $f3){
+        $this->setMaxExecutionTime();
         $time_start = microtime(true);
 
         // cache dir (dir is recursively searched...)
diff --git a/app/main/cron/ccpsystemsupdate.php b/app/main/cron/ccpsystemsupdate.php
index 28a6c692f..51e3c1027 100644
--- a/app/main/cron/ccpsystemsupdate.php
+++ b/app/main/cron/ccpsystemsupdate.php
@@ -10,7 +10,7 @@
 use Controller;
 use DB;
 
-class CcpSystemsUpdate {
+class CcpSystemsUpdate extends AbstractCron {
 
     const LOG_TEXT = '%s prepare table (%.3F s), jump (%.3F s), kill (%.3F s), update all (%.3F s)';
 
@@ -35,7 +35,6 @@ class CcpSystemsUpdate {
      * @return array
      */
     private function prepareSystemLogTables(){
-
         // get information for all systems from CCP DB
         $systemController = new Controller\Api\System();
         $systemsData = $systemController->getSystems();
@@ -72,6 +71,7 @@ private function prepareSystemLogTables(){
      * @param \Base $f3
      */
     function importSystemData($f3){
+        $this->setMaxExecutionTime();
 
         // prepare system jump log table ------------------------------------------------------------------------------
         $time_start = microtime(true);
diff --git a/app/main/cron/characterupdate.php b/app/main/cron/characterupdate.php
index eb795ddb4..fc6b81b4f 100644
--- a/app/main/cron/characterupdate.php
+++ b/app/main/cron/characterupdate.php
@@ -11,7 +11,7 @@
 use Model;
 
 
-class CharacterUpdate {
+class CharacterUpdate extends AbstractCron {
 
     /**
      * default character_log time until a log entry get re-checked by cronjob
@@ -41,6 +41,7 @@ protected function getCharacterLogInactiveTime(\Base $f3){
      * @throws \Exception
      */
     function deleteLogData(\Base $f3){
+        $this->setMaxExecutionTime();
         DB\Database::instance()->getDB('PF');
         $logInactiveTime = $this->getCharacterLogInactiveTime($f3);
 
@@ -84,6 +85,7 @@ function deleteLogData(\Base $f3){
      * @throws \Exception
      */
     function cleanUpCharacterData(\Base $f3){
+        $this->setMaxExecutionTime();
         DB\Database::instance()->getDB('PF');
 
         /**
@@ -96,7 +98,6 @@ function cleanUpCharacterData(\Base $f3){
             ':active' => 1
         ]);
 
-
         if(is_object($characters)){
             foreach($characters as $character){
                 /**
@@ -115,7 +116,8 @@ function cleanUpCharacterData(\Base $f3){
      * @param \Base $f3
      * @throws \Exception
      */
-    function deleteAuthenticationData($f3){
+    function deleteAuthenticationData(\Base $f3){
+        $this->setMaxExecutionTime();
         DB\Database::instance()->getDB('PF');
 
         /**
diff --git a/app/main/cron/mapupdate.php b/app/main/cron/mapupdate.php
index 99a61314d..313816f83 100644
--- a/app/main/cron/mapupdate.php
+++ b/app/main/cron/mapupdate.php
@@ -11,7 +11,7 @@
 use lib\Config;
 use Model;
 
-class MapUpdate {
+class MapUpdate extends AbstractCron {
 
     const LOG_TEXT_MAPS = '%s (%d maps)';
 
@@ -25,6 +25,7 @@ class MapUpdate {
      * @throws \Exception\PathfinderException
      */
     function deactivateMapData(\Base $f3){
+        $this->setMaxExecutionTime();
         $privateMapLifetime = (int)Config::getMapsDefaultConfig('private.lifetime');
 
         if($privateMapLifetime > 0){
@@ -49,6 +50,7 @@ function deactivateMapData(\Base $f3){
      * @throws \Exception
      */
     function deleteMapData(\Base $f3){
+        $this->setMaxExecutionTime();
         $pfDB = DB\Database::instance()->getDB('PF');
         $deletedMapsCount = 0;
 
@@ -87,6 +89,7 @@ function deleteMapData(\Base $f3){
      * @throws \Exception
      */
     function deleteEolConnections(\Base $f3){
+        $this->setMaxExecutionTime();
         $eolExpire = (int)$f3->get('PATHFINDER.CACHE.EXPIRE_CONNECTIONS_EOL');
 
         if($eolExpire > 0){
@@ -131,6 +134,7 @@ function deleteEolConnections(\Base $f3){
      * @throws \Exception
      */
     function deleteExpiredConnections(\Base $f3){
+        $this->setMaxExecutionTime();
         $whExpire = (int)$f3->get('PATHFINDER.CACHE.EXPIRE_CONNECTIONS_WH');
 
         if($whExpire > 0){
@@ -176,6 +180,7 @@ function deleteExpiredConnections(\Base $f3){
      * @param \Base $f3
      */
     function deleteSignatures(\Base $f3){
+        $this->setMaxExecutionTime();
         $signatureExpire = (int)$f3->get('PATHFINDER.CACHE.EXPIRE_SIGNATURES');
 
         if($signatureExpire > 0){
diff --git a/app/main/cron/statisticsupdate.php b/app/main/cron/statisticsupdate.php
index 266367090..ac9f78ca7 100644
--- a/app/main/cron/statisticsupdate.php
+++ b/app/main/cron/statisticsupdate.php
@@ -9,7 +9,7 @@
 namespace cron;
 use DB;
 
-class StatisticsUpdate {
+class StatisticsUpdate extends AbstractCron {
 
     const LOG_TEXT_STATISTICS = '%s (%d rows)';
 
@@ -20,6 +20,8 @@ class StatisticsUpdate {
      * @param \Base $f3
      */
     function deleteStatisticsData(\Base $f3){
+        $this->setMaxExecutionTime();
+
         $currentYear = (int)date('o');
         $currentWeek = (int)date('W');
         $expiredYear = $currentYear - 1;